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Medium · 5.3 CVE-2026-104441 EUVD-2026-91451GHSA-9396-2vxw-5hf3

YesWiki before 4.6.7 Unauthenticated SSRF via valeur Action

Published Oct 2, 2026 · Updated Oct 6, 2026 · Assigned by VulnCheck

Description

YesWiki before 4.6.7 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server fetch arbitrary hosts and ports via the {{valeur}} action's url parameter. Attackers can submit the action through the content parameter of handlers/page/render.php to probe internal HTTP services and read back response content matching fiche markup.

Affected products

VendorProductAffectedFixed
YesWiki yeswiki < 4.6.7 4.6.7

References