CVE catalog

CVE-2023-26819

cJSON vulnerabilities

cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.

Severity: Low · CVSS 2.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Jan 1, 2023, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.23% · Oct 27, 2026

Projects and upstream resources

[cjson][Source-reported homepage]

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 / release	Package	Version	Status	Source
Debiantrixie-security	cjson	`1.7.18-3.1+deb13u1`	Fixed	[CVE-2023-26819]
Debiantrixie	cjson	`1.7.18-3.1`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debiantrixie	cjson	`1.7.18-3.1+deb13u1`	Fixed	[CVE-2023-26819]
Debiansid	cjson	`1.7.18-3.1`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debiansid	cjson	`1.7.19-2`	Fixed	[CVE-2023-26819]
Debianforky	cjson	`1.7.18-3.1`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debianforky	cjson	`1.7.19-2`	Fixed	[CVE-2023-26819]
Debianbookworm-security	cjson	`1.7.15-1+deb12u4`	Fixed	[CVE-2023-26819]
Debianbookworm	cjson	`1.7.15-1+deb12u3`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debianbookworm	cjson	`1.7.15-1+deb12u4`	Fixed	[CVE-2023-26819]

Showing 10 fix observations. All 28 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	cjson	`1.7.15-1+deb12u3`	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	cjson	`1.7.17-1ubuntu0.1~esm3`	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	libcjson-dev	`1.7.17-1ubuntu0.1~esm3`	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	libcjson1	`1.7.17-1ubuntu0.1~esm3`	UnknownSource applicability is not established	Provider not reported
Debianbookworm	cjson	`1.7.15-1+deb12u3`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debianbookworm	cjson	`1.7.15-1+deb12u4`	Fixed	[CVE-2023-26819]
Debianbookworm-security	cjson	`1.7.15-1+deb12u4`	Fixed	[CVE-2023-26819]
Debianforky	cjson	`1.7.18-3.1`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debianforky	cjson	`1.7.19-2`	Fixed	[CVE-2023-26819]
Debiansid	cjson	`1.7.18-3.1`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debiansid	cjson	`1.7.19-2`	Fixed	[CVE-2023-26819]
Debiantrixie	cjson	`1.7.18-3.1`	FixedDistribution-reported fixed boundary	[CVE-2023-26819]
Debiantrixie	cjson	`1.7.18-3.1+deb13u1`	Fixed	[CVE-2023-26819]
Debiantrixie-security	cjson	`1.7.18-3.1+deb13u1`	Fixed	[CVE-2023-26819]
Opensuseleap 16.0	cJSON	`1.7.19-160000.1.1`	UnknownSource applicability is not established	[OPENSUSE-SU-2026:20340-1]Mar 23, 2026, 4:54:51 AM UTC
Opensusetumbleweed	cJSON	`1.7.19-1.1`	UnknownSource applicability is not established	[OPENSUSE-SU-2025:15583-1]Mar 23, 2026, 4:53:58 AM UTC
Suselinux enterprise workstation extension 15 sp7	cJSON	`1.7.19-150700.3.3.1`	UnknownSource applicability is not established	[SUSE-SU-2025:03520-1]Feb 4, 2026, 4:07:23 AM UTC
Ubuntu22.04	cjson	`1.7.14-1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntu22.04	cjson	`1.7.15-1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntu22.04	cjson	`1.7.15-1ubuntu0.1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntu25.10	cjson	`1.7.18-3`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC
Ubuntu25.10	cjson	`1.7.18-3.1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC
Ubuntu25.10	cjson	`1.7.18-3.1ubuntu0.1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC
Ubuntupro	cjson	`1.7.16-1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntupro	cjson	`1.7.16-2`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntupro	cjson	`1.7.17-1`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntupro	cjson	`1.7.17-1ubuntu0.1~esm2`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC
Ubuntupro	cjson	`1.7.17-1ubuntu0.1~esm3`	UnknownSource applicability is not established	[USN-7973-1]Apr 27, 2026, 6:34:23 PM UTC[UBUNTU-CVE-2023-26819]Apr 22, 2026, 2:04:19 PM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "cjson",
      "status": "fixed",
      "release": "sid",
      "version": "1.7.19-2"
    },
    {
      "name": "cjson",
      "status": "fixed",
      "release": "forky",
      "version": "1.7.19-2"
    },
    {
      "name": "cjson",
      "status": "fixed",
      "release": "trixie",
      "version": "1.7.18-3.1+deb13u1"
    },
    {
      "name": "cjson",
      "status": "fixed",
      "release": "trixie-security",
      "version": "1.7.18-3.1+deb13u1"
    },
    {
      "name": "cjson",
      "status": "fixed",
      "release": "bookworm",
      "version": "1.7.15-1+deb12u4"
    },
    {
      "name": "cjson",
      "status": "fixed",
      "release": "bookworm-security",
      "version": "1.7.15-1+deb12u4"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1103687,
      "name": "cjson",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "1.7.18-3.1"
    },
    {
      "bug": 1103687,
      "name": "cjson",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "1.7.18-3.1"
    },
    {
      "bug": 1103687,
      "name": "cjson",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "1.7.18-3.1"
    },
    {
      "bug": 1103687,
      "name": "cjson",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "1.7.15-1+deb12u3"
    }
  ],
  "distribution_packages": [
    {
      "name": "cjson",
      "fixed_version": "1.7.15-1+deb12u3",
      "applicability_unknown": true
    },
    {
      "name": "cjson",
      "fixed_version": "1.7.17-1ubuntu0.1~esm3",
      "applicability_unknown": true
    },
    {
      "name": "libcjson-dev",
      "fixed_version": "1.7.17-1ubuntu0.1~esm3",
      "applicability_unknown": true
    },
    {
      "name": "libcjson1",
      "fixed_version": "1.7.17-1ubuntu0.1~esm3",
      "applicability_unknown": true
    },
    {
      "name": "cjson",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.17-1ubuntu0.1~esm3"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "1.7.16-1",
        "1.7.16-2",
        "1.7.17-1",
        "1.7.17-1ubuntu0.1~esm2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-7973-1",
      "fixed_version": "1.7.17-1ubuntu0.1~esm3",
      "provider_source": "pypi",
      "provider_record_id": "USN-7973-1",
      "provider_updated_at": "2026-04-27T18:34:23.159999Z",
      "applicability_unknown": true
    },
    {
      "name": "cjson",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
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            },
            {
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            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "1.7.14-1",
        "1.7.15-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-7973-1",
      "fixed_version": "1.7.15-1ubuntu0.1",
      "provider_source": "pypi",
      "provider_record_id": "USN-7973-1",
      "provider_updated_at": "2026-04-27T18:34:23.159999Z",
      "applicability_unknown": true
    },
    {
      "name": "cjson",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.18-3.1ubuntu0.1"
            }
          ]
        }
      ],
      "release": "25.10",
      "versions": [
        "1.7.18-3",
        "1.7.18-3.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/USN-7973-1",
      "fixed_version": "1.7.18-3.1ubuntu0.1",
      "provider_source": "pypi",
      "provider_record_id": "USN-7973-1",
      "provider_updated_at": "2026-04-27T18:34:23.159999Z",
      "applicability_unknown": true
    },
    {
      "name": "cjson",
      "distro": "ubuntu",
      "ranges": [
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          "type": "ECOSYSTEM",
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            },
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            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "1.7.16-1",
        "1.7.16-2",
        "1.7.17-1",
        "1.7.17-1ubuntu0.1~esm2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-26819",
      "fixed_version": "1.7.17-1ubuntu0.1~esm3",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2023-26819",
      "provider_updated_at": "2026-04-22T14:04:19.653840Z",
      "applicability_unknown": true
    },
    {
      "name": "cjson",
      "distro": "ubuntu",
      "ranges": [
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            {
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            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
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        "1.7.15-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-26819",
      "fixed_version": "1.7.15-1ubuntu0.1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2023-26819",
      "provider_updated_at": "2026-04-22T14:04:19.653840Z",
      "applicability_unknown": true
    },
    {
      "name": "cJSON",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.19-160000.1.1"
            }
          ]
        }
      ],
      "release": "leap 16.0",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/openSUSE-SU-2026:20340-1",
      "fixed_version": "1.7.19-160000.1.1",
      "provider_source": "pypi",
      "provider_record_id": "OPENSUSE-SU-2026:20340-1",
      "provider_updated_at": "2026-03-23T04:54:51.385572Z",
      "applicability_unknown": true
    },
    {
      "name": "cJSON",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.19-1.1"
            }
          ]
        }
      ],
      "release": "tumbleweed",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/openSUSE-SU-2025:15583-1",
      "fixed_version": "1.7.19-1.1",
      "provider_source": "pypi",
      "provider_record_id": "OPENSUSE-SU-2025:15583-1",
      "provider_updated_at": "2026-03-23T04:53:58.240612Z",
      "applicability_unknown": true
    },
    {
      "name": "cJSON",
      "distro": "suse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.19-150700.3.3.1"
            }
          ]
        }
      ],
      "release": "linux enterprise workstation extension 15 sp7",
      "versions": [],
      "ecosystem": "rpm",
      "provider_url": "https://osv.dev/vulnerability/SUSE-SU-2025:03520-1",
      "fixed_version": "1.7.19-150700.3.3.1",
      "provider_source": "pypi",
      "provider_record_id": "SUSE-SU-2025:03520-1",
      "provider_updated_at": "2026-02-04T04:07:23.805289Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #1103687]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libcjson1]Unknown
Source package: [cjson]
Details (4)
- 1.7.15-1+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
- 1.7.15-1+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
[libcjson-dev]Unknown
Source package: [cjson]
Details (4)
- 1.7.15-1+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
- 1.7.15-1+deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12
- 1.7.15-1+deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 1.7.15-1+deb12u3
  usn · cjson · debian · bookworm; usn · cjson · debian · 12

[Debian 13 (Trixie)]

[libcjson1]Unknown
Source package: [cjson]
Details (4)
- 1.7.18-3.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
[libcjson-dev]Unknown
Source package: [cjson]
Details (4)
- 1.7.18-3.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13
- 1.7.18-3.1+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 1.7.18-3.1
  usn · cjson · debian · 13

[openSUSE Tumbleweed]

[cJSON-devel]Unknown
Source package: [cJSON]
Details (1)
- 1.7.19-3.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.7.19-1.1
  Version impact unknown
  usn · cJSON · opensuse · tumbleweed
[libcjson1]Unknown
Source package: [cJSON]
Details (1)
- 1.7.19-3.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.7.19-1.1
  Version impact unknown
  usn · cJSON · opensuse · tumbleweed
[libcjson1-32bit]Unknown
Source package: [cJSON]
Details (1)
- 1.7.19-3.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.7.19-1.1
  Version impact unknown
  usn · cJSON · opensuse · tumbleweed

Observed: Oct 28, 2026, 5:51:29 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]