CVE catalog

CVE-2020-4048

wordpress affected and fixed versions

In affected versions of WordPress, due to an issue in wp_validate_redirect() and URL sanitization, an arbitrary external link can be crafted leading to unintended/open redirect when clicked. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

Severity: Medium · CVSS 5.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Published: Jun 12, 2020, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.98% · Oct 27, 2026

Projects and upstream resources

[wordpress][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	wordpress	`6.8.10+dfsg1-0+deb13u1`	Fixed	[CVE-2020-4048]
Debiantrixie	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debiantrixie	wordpress	`6.8.7+dfsg1-0+deb13u1`	Fixed	[CVE-2020-4048]
Debiansid	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debiansid	wordpress	`7.1.3+dfsg1-1`	Fixed	[CVE-2020-4048]
Debianforky	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debianforky	wordpress	`7.1.3+dfsg1-1`	Fixed	[CVE-2020-4048]
Debianbookworm-security	wordpress	`6.1.9+dfsg1-0+deb12u1`	Fixed	[CVE-2020-4048]
Debianbookworm	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debianbookworm	wordpress	`6.1.9+dfsg1-0+deb12u1`	Fixed	[CVE-2020-4048]

Showing 10 fix observations. All 31 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
Debianbookworm	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debianbookworm	wordpress	`6.1.9+dfsg1-0+deb12u1`	Fixed	[CVE-2020-4048]
Debianbookworm-security	wordpress	`6.1.9+dfsg1-0+deb12u1`	Fixed	[CVE-2020-4048]
Debianforky	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debianforky	wordpress	`7.1.3+dfsg1-1`	Fixed	[CVE-2020-4048]
Debiansid	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debiansid	wordpress	`7.1.3+dfsg1-1`	Fixed	[CVE-2020-4048]
Debiantrixie	wordpress	`5.4.2+dfsg1-1`	FixedDistribution-reported fixed boundary	[CVE-2020-4048]
Debiantrixie	wordpress	`6.8.7+dfsg1-0+deb13u1`	Fixed	[CVE-2020-4048]
Debiantrixie-security	wordpress	`6.8.10+dfsg1-0+deb13u1`	Fixed	[CVE-2020-4048]
Ubuntu16.04	wordpress	`4.3+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu16.04	wordpress	`4.3.1+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu16.04	wordpress	`4.4+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu16.04	wordpress	`4.4.1+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu16.04	wordpress	`4.4.2+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu16.04	wordpress	`4.4.2+dfsg-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu18.04	wordpress	`4.8.2+dfsg-2`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu18.04	wordpress	`4.8.3+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu18.04	wordpress	`4.9.1+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu18.04	wordpress	`4.9.2+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu18.04	wordpress	`4.9.4+dfsg-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu18.04	wordpress	`4.9.5+dfsg1-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu20.04	wordpress	`5.2.2+dfsg1-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu20.04	wordpress	`5.2.4+dfsg1-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu20.04	wordpress	`5.3.2+dfsg1-1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu20.04	wordpress	`5.3.2+dfsg1-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu22.04	wordpress	`5.7.1+dfsg1-2ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu22.04	wordpress	`5.8.1+dfsg1-2ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu22.04	wordpress	`5.8.2+dfsg1-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu22.04	wordpress	`5.8.3+dfsg1-1ubuntu1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC
Ubuntu22.04	wordpress	`5.8.3+dfsg1-1ubuntu1.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2020-4048]Oct 24, 2025, 4:48:16 AM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "wordpress",
      "status": "fixed",
      "release": "sid",
      "version": "7.1.3+dfsg1-1"
    },
    {
      "name": "wordpress",
      "status": "fixed",
      "release": "forky",
      "version": "7.1.3+dfsg1-1"
    },
    {
      "name": "wordpress",
      "status": "fixed",
      "release": "trixie",
      "version": "6.8.7+dfsg1-0+deb13u1"
    },
    {
      "name": "wordpress",
      "status": "fixed",
      "release": "trixie-security",
      "version": "6.8.10+dfsg1-0+deb13u1"
    },
    {
      "name": "wordpress",
      "status": "fixed",
      "release": "bookworm",
      "version": "6.1.9+dfsg1-0+deb12u1"
    },
    {
      "name": "wordpress",
      "status": "fixed",
      "release": "bookworm-security",
      "version": "6.1.9+dfsg1-0+deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 962685,
      "name": "wordpress",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "5.4.2+dfsg1-1"
    },
    {
      "bug": 962685,
      "name": "wordpress",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "5.4.2+dfsg1-1"
    },
    {
      "bug": 962685,
      "name": "wordpress",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "5.4.2+dfsg1-1"
    },
    {
      "bug": 962685,
      "name": "wordpress",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "5.4.2+dfsg1-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "wordpress",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "4.3+dfsg-1",
        "4.3.1+dfsg-1",
        "4.4+dfsg-1",
        "4.4.1+dfsg-1",
        "4.4.2+dfsg-1",
        "4.4.2+dfsg-1ubuntu1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-4048",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-4048",
      "provider_updated_at": "2025-10-24T04:48:16Z",
      "applicability_unknown": true
    },
    {
      "name": "wordpress",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "4.8.2+dfsg-2",
        "4.8.3+dfsg-1",
        "4.9.1+dfsg-1",
        "4.9.2+dfsg-1",
        "4.9.4+dfsg-1",
        "4.9.5+dfsg1-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-4048",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-4048",
      "provider_updated_at": "2025-10-24T04:48:16Z",
      "applicability_unknown": true
    },
    {
      "name": "wordpress",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "5.2.2+dfsg1-1",
        "5.2.4+dfsg1-1",
        "5.3.2+dfsg1-1",
        "5.3.2+dfsg1-1ubuntu1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-4048",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-4048",
      "provider_updated_at": "2025-10-24T04:48:16Z",
      "applicability_unknown": true
    },
    {
      "name": "wordpress",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "5.7.1+dfsg1-2ubuntu1",
        "5.8.1+dfsg1-2ubuntu1",
        "5.8.2+dfsg1-1ubuntu1",
        "5.8.3+dfsg1-1ubuntu1",
        "5.8.3+dfsg1-1ubuntu1.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-4048",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-4048",
      "provider_updated_at": "2025-10-24T04:48:16Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #962685]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[wordpress]Unknown
Details (4)
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
[wordpress-l10n]Unknown
Source package: [wordpress]
Details (4)
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
[wordpress-theme-twentytwentyone]Unknown
Source package: [wordpress]
Details (4)
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
[wordpress-theme-twentytwentythree]Unknown
Source package: [wordpress]
Details (4)
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
[wordpress-theme-twentytwentytwo]Unknown
Source package: [wordpress]
Details (4)
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- 6.1.9+dfsg1-0+deb12u1 · all · bookworm-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12

[Debian 13 (Trixie)]

[wordpress]Unknown
Details (6)
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.10+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.6+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
[wordpress-l10n]Unknown
Source package: [wordpress]
Details (6)
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.10+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.6+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
[wordpress-theme-twentytwentyfive]Unknown
Source package: [wordpress]
Details (6)
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.10+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.6+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
[wordpress-theme-twentytwentyfour]Unknown
Source package: [wordpress]
Details (6)
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.10+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.6+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
[wordpress-theme-twentytwentythree]Unknown
Source package: [wordpress]
Details (6)
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.3+dfsg1-0+deb13u1 · all · trixie
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.10+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.6+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13
- 6.8.7+dfsg1-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 5.4.2+dfsg1-1
  dsa · wordpress · debian · 13

Observed: Oct 23, 2026, 5:52:49 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]