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Vulnerability IntelligenceCVE-2026-39839

CVE-2026-39839

MEDIUM6.3

Stored XSS through URLs in Cargo's map format

Published Apr 7, 2026

Modified 2 weeks ago

Details

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

References

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237957

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Cargo/+/1237977

https://phabricator.wikimedia.org/T416271

https://www.cve.org/CVERecord?id=CVE-2026-39839

CVSS Analysis

CVSS v4.0

6.3

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

LowPR:L

User Interaction

PassiveUI:P

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

NoneVI:N

Vuln. Availability

NoneVA:N

Subsequent System

Subseq. Confidentiality

HighSC:H

Subseq. Integrity

HighSI:H

Subseq. Availability

NoneSA:N

6.3/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

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedApr 7, 2026

ModifiedApr 7, 2026

CVE-2026-39839 | Mondoo Vulnerability Intelligence