Server-Side Request Forgery Vulnerability in YesWiki by YesWiki
CVE-2026-104463

8.3HIGH

Key Information:

Vendor

Yeswiki

Status
Yeswiki
Vendor
CVE Published:
2 October 2026

What is CVE-2026-104463?

YesWiki versions prior to 4.6.7 are susceptible to a server-side request forgery (SSRF) vulnerability. This allows unauthenticated attackers to manipulate the server into making requests to internal or cloud metadata services by sending specially crafted signed Follow activities to the public forms actor inbox route. By using their own keyId, attackers can bypass normal security controls and conduct stealthy GET and POST requests to sensitive internal endpoints.

Affected Version(s)

yeswiki 0 < 4.6.7

yeswiki 4.6.7

References

https://github.com/YesWiki/yeswiki/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7...
third-party-advisory

CVSS V4

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

manus-use
.