CVE-2026-104465

YesWiki before 4.6.7 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via the field parameter of the mail handler. Attackers can craft links whose field value breaks out of the ajax-mail-form action attribute to execute JavaScript in victims' browsers.

Score

CVSS 3.1 6.1 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-02

Last modified

2026-10-06

Weaknesses

CWE-79

Affected products

• Yeswiki (Yeswiki)

References

• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-2fc6-rvp3-fgfj
• https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-reflected-xss-via-field-parameter-in-mail-handler