---
id: CVE-2025-61766
title: >-
  Bucket is a MediaWiki extension to store and retrieve structured data on
  articles
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 exce…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-674
published: '2025-10-06'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T10:10:00.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-61766'
references:
  - url: >-
      https://github.com/weirdgloop/mediawiki-extensions-Bucket/blob/ad704120a1660b5929fb5825db1cf85c9c77acf4/includes/Expression/MemberOfExpression.php#L34
    label: security-advisories@github.com
  - url: >-
      https://github.com/weirdgloop/mediawiki-extensions-Bucket/commit/6f4a71d531cb802cdb991d2a4ca7bf8fb691defd
    label: security-advisories@github.com
  - url: >-
      https://github.com/weirdgloop/mediawiki-extensions-Bucket/security/advisories/GHSA-r9f2-4jh3-659j
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00376
epssPercentile: 0.29487
ingestedAt: '2026-10-09T12:53:28.908Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.