VIR Vulnerability Intelligence Relay

CVE-2016-6334

medium
Published 2017-04-20 · Modified 2026-05-13
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
6.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
6.1

Description

Cross-site scripting (XSS) vulnerability in the Parser::replaceInternalLinks2 method in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via vectors involving replacement of percent encoding in unclosed internal links.

Predictions

Exploit likelihood
71%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
debian Debian Fixed 5 releases
VersionStatusFixed in
trixie Fixed 1:1.27.1-1
sid Fixed 1:1.27.1-1
forky Fixed 1:1.27.1-1
bullseye Fixed 1:1.27.1-1
bookworm Fixed 1:1.27.1-1

Application impact
VendorProductVersionsFixed
mediawikimediawiki{"endIncluding":"1.23.14"}
mediawikimediawiki1.26.0
mediawikimediawiki1.26.1
mediawikimediawiki1.26.2
mediawikimediawiki1.26.3
mediawikimediawiki1.26.4
mediawikimediawiki1.27.0

References

CWEs

CWE-79

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.