Description
YesWiki before 4.6.7 contains a server-side request forgery vulnerability in validateKeyIdUrl() that allows unauthenticated attackers to bypass the SSRF guard using 6to4, NAT64, or IPv4-compatible IPv6 addresses. Attackers can send a crafted Signature keyId to the public actor inbox route to reach cloud metadata, loopback services, or internal hosts.
Published: 2026-10-02
Score: 8.3 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 02 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description YesWiki before 4.6.7 contains a server-side request forgery vulnerability in validateKeyIdUrl() that allows unauthenticated attackers to bypass the SSRF guard using 6to4, NAT64, or IPv4-compatible IPv6 addresses. Attackers can send a crafted Signature keyId to the public actor inbox route to reach cloud metadata, loopback services, or internal hosts.
Title YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses
First Time appeared Yeswiki
Yeswiki yeswiki
Weaknesses CWE-918
CPEs cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Vendors & Products Yeswiki
Yeswiki yeswiki
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}

cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-02T14:10:28.799Z

Reserved: 2026-10-02T00:53:58.504Z

Link: CVE-2026-104458

cve-icon Vulnrichment

Updated: 2026-10-02T14:10:23.879Z

cve-icon NVD

Status : Deferred

Published: 2026-10-02T12:17:17.813

Modified: 2026-10-02T15:17:07.810

Link: CVE-2026-104458

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T14:30:24Z

Weaknesses
  • CWE-918

    Server-Side Request Forgery (SSRF)