CVE-2026-39837

6.3 mediumEPSS 0.2%

Medium (6.3) in mediawiki cargo. EPSS 0.2% chance of exploitation in the next 30 days.

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in WikiWorks Mediawiki - Cargo Extension allows Stored XSS.This issue affects Mediawiki - Cargo Extension: before 3.8.7.

Severity

CVSS 4.0

6.3 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-11-01)
CWE: CWE-80
Published: 2026-04-07
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

mediawiki:cargo

References

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237979
https://phabricator.wikimedia.org/T416402

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