CVE-2026-104463

EUVD-2026-91474
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.
SSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
7 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
yeswikiyeswiki
𝑥
< 4.6.7
CNA
Common Weakness Enumeration
References
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wp
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-ssrf-via-activitypub-inbox
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wp