CVE-2026-104459
YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 2, 2026
- Updated
- Oct 2, 2026
- Reserved
- Oct 2, 2026
Description
YesWiki before 4.6.7 contains a server-side request forgery vulnerability in WebfingerService that allows unauthenticated attackers to trigger HTTPS requests to internal hosts. Attackers can POST a crafted actor_handle with a numeric host and port to the abonnements view to probe internal HTTPS services and ports.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
yeswikiYesWiki |
|
References
- GitHub Security Advisory (GHSA-x4mq-qxvc-g82j)vendor-advisory
- VulnCheck Advisory: YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handlethird-party-advisory
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