Wikimedia MediaWiki up to 1.45.x/1.45.3/1.44.5/1.43.8 ApiChangeAuthenticationData.Php, improper authentication

Summaryinfo

A vulnerability classified as critical was found in Wikimedia MediaWiki up to 1.45.x/1.45.3/1.44.5/1.43.8. Impacted is an unknown function of the file includes/Api/ApiChangeAuthenticationData.Php,. Such manipulation leads to Remote Code Execution. This vulnerability is listed as CVE-2026-58029. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Wikimedia MediaWiki up to 1.45.x/1.45.3/1.44.5/1.43.8. It has been rated as critical. Affected by this issue is an unknown function of the file includes/Api/ApiChangeAuthenticationData.Php,. The manipulation with an unknown input leads to a remote code execution vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiChangeAuthenticationData.Php, includes/Api/ApiLinkAccount.Php, includes/Api/ApiRemoveAuthenticationData.Php, includes/Specials/SpecialLinkAccounts.Php, includes/Specials/SpecialUnlinkAccounts.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

The advisory is available at phabricator.wikimedia.org. This vulnerability is handled as CVE-2026-58029 since 06/27/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 324027 (Linux Distros Unpatched Vulnerability : CVE-2026-58029), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.46.0, 1.45.4, 1.44.6 or 1.43.9 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (324027). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Content Management System

Vendor

• Wikimedia

Name

• MediaWiki

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40
• 1.41
• 1.42
• 1.43
• 1.43.0
• 1.43.1
• 1.43.2
• 1.43.3
• 1.43.4
• 1.43.5
• 1.43.6
• 1.43.7
• 1.43.8
• 1.44
• 1.44.0
• 1.44.1
• 1.44.2
• 1.44.3
• 1.44.4
• 1.44.5
• 1.45
• 1.45.0
• 1.45.1
• 1.45.2
• 1.45.3

License

• open-source

CPE 2.3info

• 🔒
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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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