What is GHSA-mf95-w988-564j?

GHSA-mf95-w988-564j is a security advisory published by GitHub Security Advisories with High severity. YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach...

Which CVE IDs does GHSA-mf95-w988-564j cover?

GHSA-mf95-w988-564j covers the following CVE IDs: CVE-2026-104450. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mf95-w988-564j?

GHSA-mf95-w988-564j has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-mf95-w988-564jHighCVSS 6.5

YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach...

Vendor

GitHub Security Advisories

Published

October 2, 2026

Last Modified

October 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-104450 →

📋 Description

YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach/actions/pointimage.php), which saves content to an attacker-chosen page with write ACL checks bypassed. Unauthenticated attackers can POST pagetag, title, and description fields to any page rendering {{pointimage}} to append raw HTML or JavaScript to any wiki page, including pages whose write ACL restricts editing, causing stored cross-site scripting in viewers' and administrators' browsers.

🔗 References (4)

https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7547-q56p-h99v
https://nvd.nist.gov/vuln/detail/CVE-2026-104450
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-acl-bypass-and-stored-xss-via-pointimage-action
https://github.com/advisories/GHSA-mf95-w988-564j