Skip to content
OpenAdvisories
Medium · 6.5 CVE-2026-104459 EUVD-2026-91470GHSA-pg4j-r96p-6rg4

YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle

Published Oct 2, 2026 · Updated Oct 2, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
YesWiki yeswiki < 4.6.7 4.6.7

References