MEDIUM 6.9 NVD
CVE-2026-104446
YesWiki before 4.6.7 contains an authentication bypass in the contact mail AJAX handler that allows unauthenticated attackers to send email through the wiki's S
YesWiki before 4.6.7 contains an authentication bypass in the contact mail AJAX handler that allows unauthenticated attackers to send email through the wiki's SMTP server. Attackers can POST an XMLHttpRequest to the mail handler without field or type parameters, supplying arbitrary recipient, sender, subject and body for spam and phishing.
References
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-36fx-49jj-57rw
- https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-open-mail-relay-
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-10-02 via NVD.
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