CVE-2026-104463CWE-918ssrf

CVE-2026-104463

High · published October 2, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
16.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
CVSS v4.0
8.3 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00254 · 16.0th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-10-02T16:17Z
References (3)
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wp · [email protected]https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-ssrf-via-activitypub-inbox · [email protected]https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wp · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 04 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 02 OCT 11:38Z
    YesWiki before 4.6.7 Unauthenticated SSRF via ActivityPub Inbox
    cvelistv5