CVE catalog

CVE-2020-28493

jinja2 affected and fixed versions

[CVE catalog]

This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for trailing punctuation. This issue can be mitigated by Markdown to format user content instead of the urlize filter, or by implementing request timeouts and limiting process memory.

Severity
High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
3.59% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / releasePackageVersionStatusSource
Debiantrixiejinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debiantrixiejinja23.1.6-1Fixed[CVE-2020-28493]
Debiansidjinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debiansidjinja23.1.6-4Fixed[CVE-2020-28493]
Debianforkyjinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debianforkyjinja23.1.6-4Fixed[CVE-2020-28493]
Debianbookwormjinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debianbookwormjinja23.1.2-1+deb12u3Fixed[CVE-2020-28493]

Showing 8 fix observations. All 63 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Alpine3.14py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.15py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.16py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.17py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.18py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.19py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.20py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.21py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.22py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.23py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Alpine3.24py3-jinja21.11.3-r0UnknownSource applicability is not established[ALPINE-CVE-2020-28493]
Debianbookwormjinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debianbookwormjinja23.1.2-1+deb12u3Fixed[CVE-2020-28493]
Debianforkyjinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debianforkyjinja23.1.6-4Fixed[CVE-2020-28493]
Debiansidjinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debiansidjinja23.1.6-4Fixed[CVE-2020-28493]
Debiantrixiejinja22.11.3-1FixedDistribution-reported fixed boundary[CVE-2020-28493]
Debiantrixiejinja23.1.6-1Fixed[CVE-2020-28493]
Suseenterprise storage 6python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Susehpe helion openstack 8python-Jinja22.9.6-3.6.1UnknownSource applicability is not established[SUSE-SU-2021:0603-1]
Suselinux enterprise high performance computing 15 sp1-espospython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise high performance computing 15 sp1-ltsspython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise high performance computing 15-espospython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise high performance computing 15-ltsspython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise module for advanced systems management 12python-Jinja22.8-19.23.1UnknownSource applicability is not established[SUSE-SU-2021:0607-1]
Suselinux enterprise module for basesystem 15 sp2python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise module for public cloud 12python-Jinja22.8-19.23.1UnknownSource applicability is not established[SUSE-SU-2021:0607-1]
Suselinux enterprise module for python 2 15 sp2python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise point of sale 12 sp2python-Jinja22.8-22.11.1UnknownSource applicability is not established[SUSE-SU-2021:0601-1]
Suselinux enterprise server 11 sp3-client-toolspython-Jinja22.6-2.19.5.1UnknownSource applicability is not established[SUSE-SU-2021:14644-1]
Suselinux enterprise server 11 sp4-client-toolspython-Jinja22.6-2.19.5.1UnknownSource applicability is not established[SUSE-SU-2021:14644-1]
Suselinux enterprise server 11-pubcloudpython-Jinja22.6-2.19.5.1UnknownSource applicability is not established[SUSE-SU-2021:14644-1]
Suselinux enterprise server 15 sp1-bclpython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise server 15 sp1-ltsspython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise server 15-ltsspython-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise server for sap applications 15python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suselinux enterprise server for sap applications 15 sp1python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Susemanager client tools 12python-Jinja22.8-19.23.1UnknownSource applicability is not established[SUSE-SU-2021:0607-1]
Susemanager proxy 4.0python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Susemanager retail branch server 4.0python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Susemanager server 4.0python-Jinja22.10.1-3.10.2UnknownSource applicability is not established[SUSE-SU-2021:0654-1]
Suseopenstack cloud 7python-Jinja22.8-22.11.1UnknownSource applicability is not established[SUSE-SU-2021:0601-1]
Suseopenstack cloud 8python-Jinja22.9.6-3.6.1UnknownSource applicability is not established[SUSE-SU-2021:0603-1]
Suseopenstack cloud 9python-Jinja22.10.1-3.6.1UnknownSource applicability is not established[SUSE-SU-2021:0602-1]
Suseopenstack cloud crowbar 8python-Jinja22.9.6-3.6.1UnknownSource applicability is not established[SUSE-SU-2021:0603-1]
Suseopenstack cloud crowbar 9python-Jinja22.10.1-3.6.1UnknownSource applicability is not established[SUSE-SU-2021:0602-1]
Ubuntu20.04jinja22.10-2ubuntu1UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntu20.04jinja22.10-2ubuntu2UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntu20.04jinja22.10.1-1ubuntu1UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntu20.04jinja22.10.1-2UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntu20.04jinja22.10.1-2ubuntu0.2UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntu22.04jinja22.11.3-1UnknownSource applicability is not established[USN-6599-1]
Ubuntu22.04jinja23.0.1-2UnknownSource applicability is not established[USN-6599-1]
Ubuntu22.04jinja23.0.3-1UnknownSource applicability is not established[USN-6599-1]
Ubuntu22.04jinja23.0.3-1ubuntu0.1UnknownSource applicability is not established[USN-6599-1]
Ubuntuprojinja22.10-1UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntuprojinja22.10-1ubuntu0.18.04.1UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntuprojinja22.10-1ubuntu0.18.04.1+esm1UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Ubuntuprojinja22.8-1UnknownSource applicability is not established[USN-5701-1]
Ubuntuprojinja22.8-1ubuntu0.1UnknownSource applicability is not established[USN-5701-1]
Ubuntuprojinja22.8-1ubuntu0.1+esm1UnknownSource applicability is not established[USN-5701-1]
Ubuntuprojinja22.9.6-1UnknownSource applicability is not established[USN-6599-1][UBUNTU-CVE-2020-28493]
Original provider fields
{
  "package_releases": [
    {
      "name": "jinja2",
      "status": "fixed",
      "release": "sid",
      "version": "3.1.6-4"
    },
    {
      "name": "jinja2",
      "status": "fixed",
      "release": "forky",
      "version": "3.1.6-4"
    },
    {
      "name": "jinja2",
      "status": "fixed",
      "release": "trixie",
      "version": "3.1.6-1"
    },
    {
      "name": "jinja2",
      "status": "fixed",
      "release": "bookworm",
      "version": "3.1.2-1+deb12u3"
    }
  ],
  "fixed_versions": [
    {
      "bug": 982736,
      "name": "jinja2",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "2.11.3-1"
    },
    {
      "bug": 982736,
      "name": "jinja2",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "2.11.3-1"
    },
    {
      "bug": 982736,
      "name": "jinja2",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "2.11.3-1"
    },
    {
      "bug": 982736,
      "name": "jinja2",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "2.11.3-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "py3-jinja2",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
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            }
          ]
        }
      ],
      "release": "3.14",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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          ]
        }
      ],
      "release": "3.15",
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      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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          ]
        }
      ],
      "release": "3.16",
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      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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            }
          ]
        }
      ],
      "release": "3.17",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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          ]
        }
      ],
      "release": "3.18",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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          ]
        }
      ],
      "release": "3.19",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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        {
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          ]
        }
      ],
      "release": "3.20",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
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      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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            }
          ]
        }
      ],
      "release": "3.21",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
      "fixed_version": "1.11.3-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
      "provider_updated_at": "2026-10-26T11:17:55.166068322Z",
      "applicability_unknown": true
    },
    {
      "name": "py3-jinja2",
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            },
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          ]
        }
      ],
      "release": "3.22",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28493",
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      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-28493",
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    },
    {
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      ],
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      "provider_record_id": "ALPINE-CVE-2020-28493",
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    },
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      "release": "pro",
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        "2.10-1",
        "2.10-1ubuntu0.18.04.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-6599-1",
      "fixed_version": "2.10-1ubuntu0.18.04.1+esm1",
      "provider_source": "pypi",
      "provider_record_id": "USN-6599-1",
      "provider_updated_at": "2026-06-29T13:51:00.595987186Z",
      "applicability_unknown": true
    },
    {
      "name": "jinja2",
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        {
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        }
      ],
      "release": "20.04",
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        "2.10-2ubuntu2",
        "2.10.1-1ubuntu1",
        "2.10.1-2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-6599-1",
      "fixed_version": "2.10.1-2ubuntu0.2",
      "provider_source": "pypi",
      "provider_record_id": "USN-6599-1",
      "provider_updated_at": "2026-06-29T13:51:00.595987186Z",
      "applicability_unknown": true
    },
    {
      "name": "jinja2",
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      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
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            {
              "fixed": "3.0.3-1ubuntu0.1"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "2.11.3-1",
        "3.0.1-2",
        "3.0.3-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-6599-1",
      "fixed_version": "3.0.3-1ubuntu0.1",
      "provider_source": "pypi",
      "provider_record_id": "USN-6599-1",
      "provider_updated_at": "2026-06-29T13:51:00.595987186Z",
      "applicability_unknown": true
    },
    {
      "name": "jinja2",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8-1ubuntu0.1+esm1"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "2.8-1",
        "2.8-1ubuntu0.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-5701-1",
      "fixed_version": "2.8-1ubuntu0.1+esm1",
      "provider_source": "pypi",
      "provider_record_id": "USN-5701-1",
      "provider_updated_at": "2026-06-25T13:31:31.257435103Z",
      "applicability_unknown": true
    },
    {
      "name": "python-Jinja2",
      "distro": "suse",
      "ranges": [
        {
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          "events": [
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            }
          ]
        }
      ],
      "release": "linux enterprise server 11-pubcloud",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2021:14644-1",
      "fixed_version": "2.6-2.19.5.1",
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      ],
      "release": "enterprise storage 6",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2021:0654-1",
      "fixed_version": "2.10.1-3.10.2",
      "provider_source": "pypi",
      "provider_record_id": "SUSE-SU-2021:0654-1",
      "provider_updated_at": "2025-05-02T04:30:46.950467Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #982736]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [python3-jinja2]Unknown

    Source package: [jinja2]

    Details (2)

    • 3.1.2-1+deb12u3 · all · bookworm

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · bookworm; dsa · jinja2 · debian · 12

    • 3.1.2-1+deb12u3 · all · bookworm

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · bookworm; dsa · jinja2 · debian · 12

  • [python-jinja2-doc]Unknown

    Source package: [jinja2]

    Details (2)

    • 3.1.2-1+deb12u3 · all · bookworm

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · bookworm; dsa · jinja2 · debian · 12

    • 3.1.2-1+deb12u3 · all · bookworm

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · bookworm; dsa · jinja2 · debian · 12

[Debian 13 (Trixie)]

  • [python3-jinja2]Unknown

    Source package: [jinja2]

    Details (2)

    • 3.1.6-1 · all · trixie

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · 13

    • 3.1.6-1 · all · trixie

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · 13

  • [python-jinja2-doc]Unknown

    Source package: [jinja2]

    Details (2)

    • 3.1.6-1 · all · trixie

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · 13

    • 3.1.6-1 · all · trixie

      Fixed · Fixed: 2.11.3-1

      dsa · jinja2 · debian · 13

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]