CVE-2025-32699: Potential javascript injection attack enabled by Unicode normalization in Action API

2.1 CVSS

Description

Vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Parsoid.This issue affects MediaWiki: before 1.39.12, 1.42.6, 1.43.1; Parsoid: before 0.16.5, 0.19.2, 0.20.2.

Classification

CVE ID: CVE-2025-32699

CVSS Base Severity: LOW

CVSS Base Score: 2.1

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/RE:M/U:Amber

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Affected Products

Vendor: Wikimedia Foundation, Wikimedia Foundation

Product: MediaWiki, Parsoid

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.09% (probability of being exploited)

EPSS Percentile: 27.63% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2025-32699
https://phabricator.wikimedia.org/T387130

Timeline