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Medium

Drupal core - SA-CORE-2021-002

  • Disclosed: 21.04.2021
  • Updated: 11.10.2026 13:17

Drupal core's sanitization API fails to properly filter cross-site scripting under certain circumstances.

Not all sites and users are affected, but configuration changes to prevent the exploit might be impractical and will vary between sites. Therefore, we recommend all sites update to this release as soon as possible.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package drupal/core >= 8.0.0, < 8.9.14, >= 9.0.0, < 9.0.12, >= 9.1.0, < 9.1.7 8.9.14, 9.0.12, 9.1.7
Composer package drupal/drupal >= 7.0.0, < 7.80, >= 8.0.0, < 8.9.14, >= 9.0.0, < 9.0.12, >= 9.1.0, < 9.1.7 7.80, 8.9.14, 9.0.12, 9.1.7
Drupal (core) drupal/core >= 8.0.0, < 8.9.14, >= 9.0.0, < 9.0.12, >= 9.1.0, < 9.1.7 8.9.14, 9.0.12, 9.1.7

References

CVSS score 6.1/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
Composer, Drupal
Package
drupal/core, drupal/drupal
Disclosed
21.04.2021
Updated
11.10.2026 13:17

Sources and licenses

OSV / GitHub Advisory Database - GHSA-3m36-mjwj-352c - CC BY 4.0

OSV / GitHub Advisory Database - DRUPAL-CORE-2021-002 - CC BY-SA 2.0; code GPL-2.0-or-later

Vulnerability history: drupal/core

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (146) in the archive
Total entries
146
First → latest
02.2018 09.2026
Without a fix
3
Exploited in attacks
5

Severity breakdown

  • Critical 15
  • High 40
  • Medium 60
  • Low 5
  • Unrated 26

Disclosures per year

Severity:
  1. Drupal core - SA-CORE-2021-002 this entry
    Medium · 6.1 CVE-2020-13672 >= 8.0.0, < 8.9.14, >= 9.0.0, < 9.0.12, >= 9.1.0, < 9.1.7 8.9.14, 9.0.12, 9.1.7
  2. Drupal Core has a SQL Injection issue
    Critical · 9.8 Exploited in attacks CVE-2026-9082 >= 8.9.0, < 10.4.10, >= 10.5.0, < 10.5.10, >= 10.6.0, < 10.6.9, >= 11.0.0, < 11.1.10, >= 11.2.0, < 11.2.12, >= 11.3.0, < 11.3.10 10.4.10, 10.5.10, 10.6.9, 11.1.10, 11.2.12, 11.3.10
  3. Drupal core contains a potential PHP Object Injection vulnerability
    High · 9.8 CVE-2024-55638 >= 8.8.0, < 10.2.11, >= 10.3.0, < 10.3.9, >= 7.0, < 7.102 10.2.11, 10.3.9, 7.102
  4. Drupal core contains a potential PHP Object Injection vulnerability
    High · 9.8 CVE-2024-55637 >= 8.8.0, < 10.2.11, >= 10.3.0, < 10.3.9, >= 11.0.0, < 11.0.8 10.2.11, 10.3.9, 11.0.8
  5. Drupal core Arbitrary PHP code execution
    High · 7.8 ghsa-gxxj-g9v8-w28p >= 7.0.0, < 7.75, >= 8.0.0, < 8.8.12, >= 8.9.0, < 8.9.10, >= 9.0.0, < 9.0.9 7.75, 8.8.12, 8.9.10, 9.0.9
  6. Drupal core Multiple vulnerabilities due to the use of the third-party library Archive_Tar
    High · 8.1 ghsa-98h9-727m-44qv >= 7.0.0, < 7.69, >= 8.0.0, < 8.7.11, >= 8.8.0, < 8.8.1 7.69, 8.7.11, 8.8.1
  7. Drupal Core Insufficient Contextual Links validation leads to Remote Code Execution
    Critical ghsa-7v68-3pr5-h3cr >= 8.0.0, < 8.5.8, >= 8.6.0, < 8.6.2 8.5.8, 8.6.2
  8. Drupal core Remote Code Execution
    Critical ghsa-6mgp-v5cm-ghg5 >= 7.0, < 7.60, >= 8.0.0, < 8.5.8, >= 8.6.0, < 8.6.2 7.60, 8.5.8, 8.6.2
  9. Drupal core - SA-CORE-2024-001
    High · 7.5 CVE-2024-11941 >= 8.0.0, < 10.1.8, >= 10.2.0, < 10.2.2 10.1.8, 10.2.2
  10. Drupal core - SA-CORE-2023-006
    Critical CVE-2023-5256 >= 8.7.0, < 9.5.11, >= 10.0.0, < 10.0.11, >= 10.1.0, < 10.1.4 9.5.11, 10.0.11, 10.1.4
  11. Drupal core - SA-CORE-2023-005
    Critical CVE-2023-31250 >= 8.0.0, < 9.4.14, >= 9.5.0, < 9.5.8, >= 10.0.0, < 10.0.8 9.4.14, 9.5.8, 10.0.8
  12. Drupal core - SA-CORE-2022-016
    High · 7.5 CVE-2022-39261 >= 8.0.0, < 9.3.22, >= 9.4.0, < 9.4.7 9.3.22, 9.4.7
  13. Drupal core - SA-CORE-2022-014
    High · 7.2 CVE-2022-25277 >= 8.0.0, < 9.3.19, >= 9.4.0, < 9.4.3 9.3.19, 9.4.3
  14. Drupal core - SA-CORE-2022-012
    High · 7.5 CVE-2022-25275 >= 8.0.0, < 9.3.19, >= 9.4.0, < 9.4.3 9.3.19, 9.4.3
  15. Drupal core - SA-CORE-2022-011
    High · 7.5 CVE-2022-31042 >= 8.0.0, < 9.2.21, >= 9.3.0, < 9.3.16 9.2.21, 9.3.16
  16. Drupal core - SA-CORE-2022-010
    High · 8.0 CVE-2022-29248 >= 8.0.0, < 9.2.20, >= 9.3.0, < 9.3.14 9.2.20, 9.3.14
  17. Drupal Access Control Bypass
    High CVE-2011-2687 >= 7.0, < 7.3 7.3
  18. Drupal Open Redirect
    High · 7.4 CVE-2016-3164 >= 8.0, < 8.0.4, >= 7.0, < 7.43, >= 6.0, < 6.38 8.0.4, 7.43, 6.38
  19. Drupal Form API ignores access restrictions on submit buttons
    High · 7.5 CVE-2016-3165 >= 6.0, < 6.38 6.38
  20. Drupal saving user accounts can sometimes grant the user all roles
    High · 8.1 CVE-2016-3169 >= 6.0, < 6.38, >= 7.0, < 7.43 6.38, 7.43
  21. Drupal Brute force amplification attacks via XML-RPC
    High · 7.5 CVE-2016-3163 >= 7.0, < 7.43, >= 6.0, < 6.38 7.43, 6.38
Show more (20) Showing 21 of 56

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