CVE-2026-58518: Cross-Site request forgery (CSRF) vulnerability in The Wikimedia Foundation Mediawiki - RedirectManager Extens

Q: How do I fix CVE-2026-58518?

mediawiki: upgrade to 1.3.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-58518 being exploited?

CVE-2026-58518 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-58518 affect?

CVE-2026-58518 affects mediawiki. Severity is medium (CVSS 6.3). Cross-Site request forgery (CSRF) vulnerability in The Wikimedia Foundation Mediawiki - RedirectManager Extension allows Cross Site Request Forgery. This issue affects Mediawiki - RedirectManager Extension: from * before 1.3.3.

Q: How urgent is CVE-2026-58518?

Priority 23/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2026-58518 is a medium-severity flaw (CVSS 6.3) affecting mediawiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-Site request forgery (CSRF) vulnerability in The Wikimedia Foundation Mediawiki - RedirectManager Extension allows Cross Site Request Forgery. This issue affects Mediawiki - RedirectManager Extension: from * before 1.3.3.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-352
Published	2026-07-01
Last modified	2026-10-25

Publisher (CNA): wikimedia-foundation · Vendor: mediawiki

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-01 05:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

mediawiki mediawiki UPGRADE

Affected: < 1.3.3

Fixed in: 1.3.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mediawiki || rpm -q mediawiki || mediawiki --version

2. UPGRADE to 1.3.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mediawiki

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mediawiki

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-58518?

mediawiki: upgrade to 1.3.3. Exact commands for each OS are on this page.

Is CVE-2026-58518 being exploited?

CVE-2026-58518 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-58518 affect?

CVE-2026-58518 affects mediawiki. Severity is medium (CVSS 6.3). Cross-Site request forgery (CSRF) vulnerability in The Wikimedia Foundation Mediawiki - RedirectManager Extension allows Cross Site Request Forgery. This issue affects Mediawiki - RedirectManager Extension: from * before 1.3.3.

How urgent is CVE-2026-58518?

Priority 23/100. No elevated risk signals yet.

Related CVEs

CVE-2026-8857 HIGH 8.8 UPGRADE A vulnerability in Wikimedia Foundation timeline. This vulnerability is associated with program files script
CVE-2026-58025 CRITICAL 9.8 UPGRADE Deserialization of untrusted data vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is ass
CVE-2026-13706 HIGH 8.8 UPGRADE Improper input validation vulnerability in Wikimedia Foundation UrlShortener. This vulnerability is associat
CVE-2026-58036 HIGH 7.5 DOWNGRADE Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
CVE-2026-58029 MEDIUM 6.5 UPGRADE Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files include

References

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