CVE-2026-104446
6.9
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
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| YesWiki | yeswiki | 0 < 4.6.7 | affected |
| YesWiki | yeswiki | 4.6.7 | unaffected |
Weaknesses
- CWE-306: Missing Authentication for Critical Function
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
Additional References
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-via-contact-mail-handler
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