CVE-2026-104459

MEDIUM 6.5

YesWiki before 4.6.7 SSRF via ActivityPub WebFinger actor_handle

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	yeswiki
Product	yeswiki
Published	Oct 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Affected Versions

YesWiki / yeswiki

0 < 4.6.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/YesWiki/yeswiki/security/advisories/GHSA-x4mq-qxvc-g82j vulncheck.com: https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-ssrf-via-activitypub-webfinger-actor-handle

Credits

🔍 manus-use