CVE-2026-39840
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation Mediawiki - Cargo Extension allows XSS Targeting Non-Script Elements.This issue affects Mediawiki - Cargo Extension: before 3.8.7.
CWE
- CWE-79 — CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
Affected
- Wikimedia Foundation / Mediawiki - Cargo Extension — v=0 <3.8.7 [affected]
CVSS
- 4.0 score=5.1 severity=MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
References
- https://phabricator.wikimedia.org/T416368
- https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237966
Source
cvelistV5-main/cves/2026/39xxx/CVE-2026-39840.json