Medium severity5.6NVD Advisory· Published Jul 3, 2025· Updated Jun 17, 2026

CVE-2025-53500

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - MassEditRegex Extension allows Stored XSS.This issue affects Mediawiki - MassEditRegex Extension: from 1.39.X before 1.39.12, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Malvineous/Masseditregex
cpe:2.3:a:malvineous:masseditregex:-:*:*:*:*:mediawiki:*:*
Wikimedia Foundation/Mediawiki - MassEditRegex Extensionllm-create
Range: from 1.39.X before 1.39.12, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2
Wikimedia Foundation/Mediawiki CSS Extensioncpe-rescue
Range: 1.39.x

Patches

Vulnerability mechanics

References

gerrit.wikimedia.org/r/c/mediawiki/extensions/MassEditRegex/+/1163878/nvdPatch
phabricator.wikimedia.org/T397334nvdExploitIssue TrackingPatch

News mentions

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cvss	0.364
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000