VulnerabilityPublished 10 Apr 2025Updated 3 Nov 2025

CVE-2025-32696: Wikimedia Foundation MediaWiki · Improper Preservation of Permissions

Affects Wikimedia Foundation MediaWikiSource GCVE Database

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Not known to be exploited · CVSS 0.0 Medium · fixed in 1.43.1 : update Wikimedia Foundation MediaWiki when convenient.

Data as of 30 Oct 2026, 00:15 UTC

CVSS 4.0 base score

0.0Medium

How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none

CVSS scores by source
CNA (wikimedia-foundation)	CVSS 4.0	0.0

Patch: Available – fixed in 1.43.1, 1.42.6, 1.39.12

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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: Present
Privileges Required: Low
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Supplemental metrics

Vulnerability Response Effort: Moderate
Provider Urgency: Green

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: Present: The successful attack depends on the presence of specific deployment and execution conditions of the vulnerable system that enable the attack. These include: a race condition must be won to successfully exploit the vulnerability (the successfulness of the attack is conditioned on execution conditions that are not under full control of the attacker, or the attack may need to be launched multiple times against a single target before being successful); the attacker must inject themselves into the logical network path between the target and the resource requested by the victim (e.g. vulnerabilities requiring an on-path attacker).
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Vulnerability Response Effort: Moderate: The actions required to respond to a vulnerability require some effort on behalf of the consumer and could cause minimal service impact to implement. Examples include: simple remote update, disabling of a subsystem, or a low-touch software upgrade such as a driver update.
Provider Urgency: Green: Provider has assessed the impact of this vulnerability as having a reduced urgency.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Wikimedia Foundation MediaWiki to 1.43.1, 1.42.6 or 1.39.12.

Affected software

Product	Affected	Fixed in
Wikimedia Foundation MediaWiki	Affected <1.39.12 >=1.39.12 <1.42.6 >=1.42.6 <1.43.1	Fixed in 1.39.12 1.42.6 1.43.1

AI-suggested

Since the vulnerability affects versions before 1.39.12, 1.42.6, and 1.43.1, upgrading MediaWiki to these or later versions is recommended to remediate the issue. No vendor advisory or patch links were provided, so confirm patch availability from official Wikimedia Foundation sources before applying updates.

Description

CVE-2025-32696 is an Improper Preservation of Permissions vulnerability in Wikimedia Foundation's MediaWiki software. It affects specific program files related to revert actions and API file revert functionality. The issue impacts MediaWiki versions before 1.39.12, 1.42.6, and 1.43.1. The vulnerability was published on April 10, 2025. No public exploits or active exploitation are known at this time.

Impact

The vulnerability could allow improper preservation of permissions during revert actions in MediaWiki, potentially leading to unauthorized permission changes. However, the CVSS score and vector indicate no direct impact on confidentiality, integrity, or availability. The attack requires partial privileges and partial user interaction, limiting the scope of exploitation. No known exploits or active exploitation have been reported.

Summary

This vulnerability involves improper preservation of permissions in MediaWiki, specifically in the files includes/actions/RevertAction.Php and includes/api/ApiFileRevert.Php. It affects MediaWiki versions prior to 1.39.12, 1.42.6, and 1.43.1. The flaw could potentially allow unauthorized permission changes during revert operations. The CVSS 4.0 vector indicates network attack vector, low attack complexity, partial privileges required, partial user interaction, and no impact on confidentiality, integrity, availability, or security scope. No public exploit code or known exploitation in the wild is reported.

CWE-281Improper Preservation of Permissions (opens in a new tab)
Base weaknessOWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 30 Oct 2026, 00:15 UTC

WeaknessesCWE-281

Technical details

References

Community reviews

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