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Advisory record · GHSA-pfm2-mqwj-ggm5

MediaWiki makeCollapsible allows applying event handler to any CSS selector

CVSS 5.3 MediumEPSS 0.012 · 67th percentile

Published by the GitHub Advisory Database at 24 May 2022, 17:13 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
mediawiki/corePackagist>=1.31.0, <1.31.7 || >=1.33.0, <1.33.3 || >=1.34.0, <1.34.11.31.7, 1.33.3, 1.34.1
Identifiers
GHSA-pfm2-mqwj-ggm5 · BIT-mediawiki-2020-10960 · CVE-2020-10960 · PKSA-pvds-fsx9-62mq
Weakness (CWE)
CWE-74 · CWE-116
Tags
Published
24 May 2022
Updated
1 Apr 2024

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

MediaWiki mediawiki/core versions from 1.31.0 to before 1.31.7, from 1.33.0 to before 1.33.3, and from 1.34.0 to before 1.34.1 are affected. A user who can add HTML content to a wiki page can apply various CSS classes to arbitrary page elements, which can change what content is shown or hidden in the interface. The source says there is no known way to use this for cross-site scripting. Upgrade to mediawiki/core 1.31.7, 1.33.3, 1.34.1 or later.

Written 4 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.012, the 67th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:30 UTC First seen by agentprime
  2. 31 Oct 2026, 14:30 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.