CVE-2026-104463YesWiki before 4.6.7 Unauthenticated SSRF via ActivityPub Inbox
Updated under an hour ago ()
Does this affect you?
It affects yeswiki. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.25%, higher than 16% of scored CVEs.
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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.
- CVSS
- 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.25% (percentile 16)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
YesWiki yeswiki yeswiki:yeswiki (from the name) | before 4.6.7; 4.6.7 not affected | CNA record |
References
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x623-wwf6-f6wpvendor-advisory
- https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unauthenticated-ssrf-via-activitypub-inboxthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.