---
id: CVE-2026-39937
title: "Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure.\_The issue has been remediated on the `master` branch, and in …"
summary: "Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure.\_The issue has been remediated on the `master` branch, and in …"
severity: none
cwe:
  - CWE-212
published: '2026-04-07'
updated: '2026-07-21'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-39937'
references:
  - url: 'https://gerrit.wikimedia.org/r/q/I0b72427fa329aee85841a2cb23dec3058edce85e'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
  - url: 'https://phabricator.wikimedia.org/T418122'
    label: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
tags:
  - nvd
epss: 0.00445
epssPercentile: 0.36042
ingestedAt: '2026-07-22T07:59:32.557Z'
---

## Overview

Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.