PT-2026-31033 · Wikimedia Foundation · Centralauth Extension+1

Kostajh + 1 · Published 2026-04-07 · Updated 2026-04-08 · CVE-2026-39937

Positive Technologies (AI Summary)

CVSS v4.0

8.8

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions The Wikimedia Foundation Mediawiki - CentralAuth Extension (affected versions not specified)

Description A flaw exists in the handling of sensitive information within the CentralAuth Extension of Mediawiki, potentially leading to resource leak exposure. This issue impacts non-release branches.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-212

Related Identifiers

CVE-2026-39937

Affected Products

Centralauth Extension

Mediawiki

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-39937 · Security Note
• https://gerrit.wikimedia.org/r/q/I0b72427fa329aee85841a2cb23dec3058edce85e · Note
• https://twitter.com/CVEnew/status/2041711860190474456 · Twitter Post
• https://phabricator.wikimedia.org/T418122 · Note