CVE-2026-39838General

LOWCVSS 6.9 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows XSS Targeting Non-Script Elements. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
General: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

General

1100.0%

Referenced assets1 URL

By indicator

https://www.cve.org/CVERecord?id=CVE-2026-39838

Full discourse1 post

CVE@CVEnew185d
General
CVE-2026-39838 Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows … https://www.cve.org/CVERecord?id=CVE-2026-39838
Post summary
The text is a concise CVE record summary stating a cross‑site scripting vulnerability in Wikimedia Foundation’s MediaWiki ProofreadPage Extension, without any mention of PoC, exploit code, active exploitation, patches, or false‑positive claims.
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