YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach/actions/pointimage.php), which saves content to an… (CVE-2026-104450)
YesWiki versions prior to 4.6.7 have a missing authorization vulnerability in the pointimage action, allowing unauthenticated attackers to bypass write access controls. This flaw enables attackers to append arbitrary HTML or JavaScript to any wiki page that renders the {{pointimage}} macro, resulting in stored cross-site scripting (XSS) affecting viewers and administrators.
AI Analysis
Technical Summary
The vulnerability in YesWiki before version 4.6.7 exists in the pointimage action located in tools/attach/actions/pointimage.php. Due to missing authorization checks, unauthenticated attackers can send POST requests with pagetag, title, and description fields to any page that uses the {{pointimage}} macro. This bypasses write ACL restrictions and allows appending of raw HTML or JavaScript, causing stored XSS in the browsers of users viewing the affected pages.
Potential Impact
An attacker can exploit this vulnerability to inject malicious scripts into wiki pages without authentication, bypassing write access controls. This can lead to stored cross-site scripting attacks, potentially compromising the confidentiality and integrity of user sessions and data for viewers and administrators of the wiki pages.
Mitigation Recommendations
A fix is available in YesWiki version 4.6.7. Users should upgrade to version 4.6.7 or later to remediate this vulnerability. No additional mitigation guidance is provided by the vendor advisory.
YesWiki before 4.6.7 contains a missing authorization flaw in the pointimage action (tools/attach/actions/pointimage.php), which saves content to an… (CVE-2026-104450)
Description
YesWiki versions prior to 4.6.7 have a missing authorization vulnerability in the pointimage action, allowing unauthenticated attackers to bypass write access controls. This flaw enables attackers to append arbitrary HTML or JavaScript to any wiki page that renders the {{pointimage}} macro, resulting in stored cross-site scripting (XSS) affecting viewers and administrators.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in YesWiki before version 4.6.7 exists in the pointimage action located in tools/attach/actions/pointimage.php. Due to missing authorization checks, unauthenticated attackers can send POST requests with pagetag, title, and description fields to any page that uses the {{pointimage}} macro. This bypasses write ACL restrictions and allows appending of raw HTML or JavaScript, causing stored XSS in the browsers of users viewing the affected pages.
Potential Impact
An attacker can exploit this vulnerability to inject malicious scripts into wiki pages without authentication, bypassing write access controls. This can lead to stored cross-site scripting attacks, potentially compromising the confidentiality and integrity of user sessions and data for viewers and administrators of the wiki pages.
Mitigation Recommendations
A fix is available in YesWiki version 4.6.7. Users should upgrade to version 4.6.7 or later to remediate this vulnerability. No additional mitigation guidance is provided by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mf95-w988-564j
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-104450"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6abfee8ea43b0b3b89e55034
Added to database: 10/02/2026, 17:49:02 UTC
Last enriched: 10/02/2026, 17:58:33 UTC
Last updated: 10/02/2026, 21:26:12 UTC
Views: 2
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