Medium severity · published Jul 3, 2025
CVE-2025-53500
Stored XSS in MassEditRegex
5.6
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MM
Mediawiki - MassEditRegex Extension · Wikimedia Foundation
1.39.x before 1.39.13; 1.42.x before 1.42.7; 1.43.x before 1.43.2 · source: vendor
MA
Masseditregex · Malvineous
All versions, or not specified · source: NVD
Affected product
MM
Mediawiki - MassEditRegex Extension
Wikimedia Foundation