CVE-2025-32696Public exploitNetwork attack vector

Authenticated file replacement via underauthorized reverts

Published Apr 10, 2025 · Updated Nov 3, 2025

Permission bypass in Wikimedia Foundation MediaWiki before 1.39.12, 1.42.6, and 1.43.1 allows remote authenticated users to replace files. RevertAction.php and ApiFileRevert.php checked only upload permission when reverting, attributing the newest revision to the reverter without enforcing reupload restrictions. An account with upload and reupload-own rights can revert another user's file and then upload a replacement despite lacking reupload permission.

CVSS severity0.0
None
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Permission bypass in Wikimedia Foundation MediaWiki before 1.39.12, 1.42.6, and 1.43.1 allows remote authenticated users to replace files. RevertAction.php and ApiFileRevert.php checked only upload permission when reverting, attributing the newest revision to the reverter without enforcing reupload restrictions. An account with upload and reupload-own rights can revert another user's file and then upload a replacement despite lacking reupload permission.

The record

CVE
CVE-2025-32696
Published
Apr 10, 2025
Updated
Nov 3, 2025
Vendor
Wikimedia Foundation
Product
MediaWiki
Classifications
CWE-281, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.39.12, 1.42.6, 1.43.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wikimedia Foundation · MediaWikiversion=0 <1.39.12, 1.42.6, 1.43.1

Published CVSS scores

0.0Wikimedia FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/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:M/U:Green

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-281Improper Preservation of Permissions
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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