CVE-2026-104446

Published: Oct 2, 2026Modified: Oct 2, 2026Deferred

6.9

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

Description

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.

Related CWEs

CWE-306

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (3)

https://github.com/YesWiki/yeswiki/security/advisories/GHSA-36fx-49jj-57rw

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-open-mail-relay-via-contact-mail-handler

Source: disclosure@vulncheck.com

https://github.com/YesWiki/yeswiki/security/advisories/GHSA-36fx-49jj-57rw

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.