CVE-2026-104587: n/a
Description
A stored Cross-Site Scripting (XSS) vulnerability exists in the blob42 gosuki application through commit 6e2bf34. The vulnerability arises because the application uses the Go text/template package instead of html/template, which fails to perform context-aware auto-escaping on bookmark URL fields. An attacker can inject malicious JavaScript payloads into bookmark URLs that execute in the victim's browser when the local web interface renders these bookmarks.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The blob42 gosuki application up to commit 6e2bf34 contains a stored XSS vulnerability due to improper template usage. Specifically, the use of text/template instead of html/template in internal/webui/templates/bookmarks.html causes the URL and DisplayURL fields of bookmarks to be rendered without proper context-aware escaping. This allows an attacker to craft bookmark URLs with HTML attribute-breaking payloads that execute arbitrary JavaScript in the victim's browser context when viewed in the local web interface.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's browser when interacting with the local web interface. This can lead to session hijacking, unauthorized actions, or other malicious behaviors within the affected application context.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid using untrusted input in bookmark URLs or consider manual sanitization. Monitor vendor channels for updates regarding an official fix or patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-10-02T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6ace99912cdf04f656ad0781
Added to database: 10/13/2026, 20:50:25 UTC
Last enriched: 10/13/2026, 22:19:31 UTC
Last updated: 10/14/2026, 00:48:09 UTC
Views: 4
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