SSRF in Yeswiki
CVE-2026-104463
YesWiki before 4.6.7 contains a server-side request forgery vulnerability that allows unauthenticated attackers to trigger server requests by sending signed Follow activities to the public forms actor inbox route. Attackers sign requests with their own keyId while supplying internal actor URLs in the body, reaching internal hosts or cloud metadata via blind GET and POST requests.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wp (vendor-advisory)
- www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-ssrf-via-acti… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-104463?
- CVE-2026-104463 is a high-severity vulnerability in Yeswiki, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.0/10. Published 2026-10-02.
- How severe is CVE-2026-104463?
- High severity. CVSS v3 base score is 7.0 out of 10.