CVE-2026-104463

High

Description

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.

SeverityHigh

CVSS7.0

Exploit probability—

Product

Yeswiki

PublishedOct 2, 2026

First seenOct 2, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

YesWiki yeswiki4.6.7 or later

Vendor advisories

github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wp

Affected products

Product	Affected versions	Fixed in
YesWiki yeswiki	v < 4.6.7	4.6.7

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