Staging Environment: Content and features may be unstable or change without notice.
Advisory details: ubuntu_osv / UBUNTU-CVE-2025-61766
Advisory ID ubuntu_osv/UBUNTU-CVE-2025-61766
Aliases CVE-2025-61766
Summary Bucket is a MediaWiki extension to store and retrieve structured data on articles. Prior to version 1.0.0, infinite recursion can occur if a user queries a bucket using the `!=` comparator. This will result in PHP's call stack limit exceeding, and/or increased memory consumption, potentially leading to a denial of service. Version 1.0.0 contains a patch for the issue.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 6.5 https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-61766.json
ubuntu-priority medium https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-61766.json
Reference id Reference type URL
https://ubuntu.com/security/CVE-2025-61766
https://www.cve.org/CVERecord?id=CVE-2025-61766
6f4a71d531cb802cdb991d2a4ca7bf8fb691defd Other https://github.com/weirdgloop/mediawiki-extensions-Bucket/commit/6f4a71d531cb802cdb991d2a4ca7bf8fb691defd
GHSA-r9f2-4jh3-659j Other https://github.com/weirdgloop/mediawiki-extensions-Bucket/security/advisories/GHSA-r9f2-4jh3-659j
MemberOfExpression.php#L34 Other https://github.com/weirdgloop/mediawiki-extensions-Bucket/blob/ad704120a1660b5929fb5825db1cf85c9c77acf4/includes/Expression/MemberOfExpression.php#L34
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-61766.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.