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CVE-2024-40600VulnerabilityPublished Updated

CVE-2024-40600: n/a

Source CVE Database V5

0

Not known to be exploited · CVSS 6.1 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Affects
MediaWiki through 1.42.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Jul 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

AI-suggested

To mitigate CVE-2024-40600, organizations should immediately review and restrict editing permissions on the MediaWiki:Sidebar page and related top-level menu entries to trusted administrators only, preventing unauthorized content injection. Implement strict input validation and output encoding on all user-supplied content in the sidebar to neutralize malicious scripts. Monitor and audit sidebar content regularly for suspicious or unexpected code. Consider disabling or replacing the Metrolook skin with a less vulnerable alternative until a security patch is released. Employ Content Security Policy (CSP) headers to restrict script execution sources and reduce the impact of potential XSS attacks. Educate users about the risks of clicking on suspicious links or interacting with untrusted content within the wiki. Stay updated with MediaWiki security advisories and apply patches promptly once available. Additionally, use web application firewalls (WAFs) to detect and block XSS attack patterns targeting the sidebar.

Description

An issue was discovered in the Metrolook skin for MediaWiki through 1.42.1. There is stored XSS via MediaWiki:Sidebar top-level menu entries.

References

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