"reupload-own" restriction can be bypassed by reverting file

published 2025-04-10 18 mo ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2025-32696 , EUVD-2025-14707

cvss: 0.0; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

Improper Preservation of Permissions vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/actions/RevertAction.Php, includes/api/ApiFileRevert.Php.

This issue affects MediaWiki: before 1.39.12, 1.42.6, 1.43.1.

Patch / fix

fixed in 2 distros 1

bitnami mediawiki 1.43.1
Wikimedia Foundation MediaWiki 1.39.12, 1.42.6, 1.43.1

mediawiki Debian 12 1:1.39.12-1~deb12u1
mediawiki Debian 14, Debian 13 1:1.43.1+dfsg-1

debian advisories DEBIAN-CVE-2025-32696

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-10)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	0.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/RE:M/U:Green
CNA	4.0	0.0	CVSS: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

Affected packages

ecosystem	package	affected	fixed in
bitnami	mediawiki	<1.43.1	1.43.1

Affected products

Wikimedia Foundation MediaWiki

Classification

Weakness

CWE-281 Improper Preservation of Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary