Sign in
Deutsch English Español Polski
Medium

Possible to circumvent title-blacklist

  • Disclosed: 24.05.2022
  • Updated: 11.10.2026 10:22

MediaWiki through 1.33.1 allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package mediawiki/core >= 1.31.0, < 1.31.6, >= 1.32.0, < 1.32.6, >= 1.33.0, < 1.33.2, >= 1.33.99, < 1.34.0 1.31.6, 1.32.6, 1.33.2, 1.34.0

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-601
Platform
Composer
Package
mediawiki/core
Disclosed
24.05.2022
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-pjv5-vv93-p648 - CC BY 4.0

Vulnerability history: mediawiki/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 (28) in the archive
Total entries
28
First → latest
05.2022 10.2023
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 2
  • High 6
  • Medium 20

Disclosures per year

Severity:
  1. MediaWiki Denial of Service vulnerability
    High · 7.5 CVE-2023-45363 < 1.35.12, >= 1.36.0, < 1.39.5, >= 1.40.0, < 1.40.1 1.35.12, 1.39.5, 1.40.1
  2. X-Forwarded-For header allows brute-forcing autoblocked IP addresses
    Critical · 9.8 CVE-2023-29141 >= 1.39.0, < 1.39.3, >= 1.38.0, < 1.38.6, < 1.35.10 1.39.3, 1.38.6, 1.35.10
  3. OATHAuth extension in MediaWiki is not implementing rate limit
    High · 7.5 CVE-2020-25827 >= 1.31.0, < 1.31.9, >= 1.32.0, < 1.34.3 1.31.9, 1.34.3
  4. Possible to circumvent title-blacklist this entry
    Medium · 6.1 CVE-2019-19709 >= 1.31.0, < 1.31.6, >= 1.32.0, < 1.32.6, >= 1.33.0, < 1.33.2, >= 1.33.99, < 1.34.0 1.31.6, 1.32.6, 1.33.2, 1.34.0
  5. Wikimedia information leak vulnerability
    High · 7.5 CVE-2019-12474 >= 1.27.0, < 1.27.6, >= 1.30.0, < 1.30.2, >= 1.31.0, < 1.31.2, >= 1.32.0, < 1.32.2 1.27.6, 1.30.2, 1.31.2, 1.32.2
  6. Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple
    High · 7.5 CVE-2019-12473 >= 1.27.0, < 1.27.6, >= 1.30.0, < 1.30.2, >= 1.31.0, < 1.31.2, >= 1.32.0, < 1.32.2 1.27.6, 1.30.2, 1.31.2, 1.32.2
  7. MediaWiki Incorrect Access Control vulnerability
    High · 7.5 CVE-2019-12472 >= 1.18.0, < 1.27.6, >= 1.30.0, < 1.30.2, >= 1.31.0, < 1.31.2, >= 1.32.0, < 1.32.2 1.27.6, 1.30.2, 1.31.2, 1.32.2
  8. Wikimedia MediaWiki allows CSRF
    High · 8.8 CVE-2019-12466 >= 1.27.0, < 1.27.6, >= 1.30.0, < 1.30.2, >= 1.31.0, < 1.31.2, >= 1.32.0, < 1.32.2 1.27.6, 1.30.2, 1.31.2, 1.32.2
  9. Wikimedia MediaWiki Incorrect Access Control vulnerability
    Critical · 9.8 CVE-2019-12468 >= 1.27.0, < 1.27.6, >= 1.30.0, < 1.30.2, >= 1.31.0, < 1.31.2, >= 1.32.0, < 1.32.2 1.27.6, 1.30.2, 1.31.2, 1.32.2

Know which vulnerabilities affect your application

With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.

Connect your application
DockRay newsletter

Application security in your inbox

Important vulnerabilities, actionable guidance and practical advice for your applications. Choose your technologies and follow what matters to your project.

  • A daily digest of new vulnerabilities, critical ones included.
  • Notifications about important updates.
  • Practical advice on application security and monitoring.

Leave empty to receive updates for every technology.

Privacy policy

Free to subscribe. Unsubscribe with one click in any email.