TI-2020-08837 Aliases CVE-2020-10959 GHSA-mqhw-wq8p-vf5r

resources/src/mediawiki.page.ready/ready.js in MediaWiki before 1.35 allows remote…

LOW 30CWE-601Published 2020-06-02 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Spoofing
Confidentiality · integrity · availability: Low · Low · None
Fix status: Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-601.

Summary

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.

Why it matters now

EPSS 0.01429 73rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial mediawiki/core (Packagist): 1.34.0-rc.0Red Hat: 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA
—	mediawiki/core (Packagist)	before 1.34.0-rc.0	1.34.0-rc.0	Patch available	GHSA-mqhw-wq8p-vf5r

— Vendor— Affected all versions Fixed in — No fix listed CNA
mediawiki/core (Packagist) Vendor— Affected before 1.34.0-rc.0 Fixed in 1.34.0-rc.0 Patch available GHSA-mqhw-wq8p-vf5r

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:mediawiki:mediawiki::::::::	before 1.35	Vulnerable	mediawiki

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:* Versions before 1.35 Vulnerable ·mediawiki

Remediation

Fix · GHSA-mqhw-wq8p-vf5r mediawiki/core (Packagist) Fixed in 1.34.0-rc.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat OpenShift Container Platform 3.11	Affected	No fix planned: Will not fix
Red Hat OpenShift Container Platform 4	Affected	No fix planned: Will not fix

Timeline

2026-10-02 Threatist record created from CVE-2020-10959
2026-10-03 Alias added: GHSA-mqhw-wq8p-vf5r

References

Exploit 1

https://phabricator.wikimedia.org/T232932

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2020-10959

Other 3

TI-2023-18933 An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. CVSS 3.1CRITICAL 9.8
TI-2023-13576 An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6… CVSS 3.1CRITICAL 9.8
TI-2023-03312 Stored XSS leads to privilege escalation in MediaWiki v1.40.0 CVSS 3.1CRITICAL 9.0
TI-2026-42109 Cross-site request forgery in Wikimedia Foundation Mediawiki - RedirectManager Extension CVSS 4.0MEDIUM 6.9
TI-2024-22822 An issue was discovered in includes/CommentFormatter/CommentParser.php in MediaWiki… CVSS 3.1HIGH 7.4
TI-2023-18935 An issue was discovered in the ProofreadPage (aka Proofread Page) extension for MediaWiki… CVSS 3.1MEDIUM 5.3

See all 416 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences