CVE-2025-6590 — Sensitive Information Exposure in Mediawiki

CWE-200 — Sensitive Information Exposure5 documents5 sources
Severity
4.6MEDIUMNVD
EPSS
0.0%
top 98.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
MediawikiDebian MediawikiWikimedia Foundation Mediawiki
Timeline
PublishedFeb 2
Latest updateFeb 3

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLUserTextField.Php. This issue affects MediaWiki: from * through 1.39.12, 1.42.76 1.43.1, 1.44.0.

CVSS vector

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

Affected Packages3 packages

▶CVEListV5wikimedia_foundation/mediawiki* — 1.39.12, 1.42.76 1.43.1, 1.44.0
▶debiandebian/mediawiki< mediawiki 1:1.39.13-1~deb12u1 (bookworm)
▶Debianmediawiki/mediawiki< 1:1.35.13-1+deb11u4+3

🔴Vulnerability Details

2
GHSA
GHSA-gc6v-8f4f-xvwp: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki↗2026-02-03
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OSV
CVE-2025-6590: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki↗2026-02-02
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📋Vendor Advisories

1
Debian
CVE-2025-6590: mediawiki - Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wiki...↗2025
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🕵️Threat Intelligence

1
Wiz
CVE-2025-6590 Impact, Exploitability, and Mitigation Steps | Wiz↗
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