CVE-2026-104458

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-85f2-5r47-2pwm
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-ssrf-guard-bypass-via-ipv6-transition-addresses
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-85f2-5r47-2pwm

Configurations

No configuration.

History

02 Oct 2026, 15:17

Type	Values Removed	Values Added
References	~~() https://github.com/YesWiki/yeswiki/security/advisories/GHSA-85f2-5r47-2pwm -~~	() https://github.com/YesWiki/yeswiki/security/advisories/GHSA-85f2-5r47-2pwm -

02 Oct 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-02 12:17

Updated : 2026-10-02 15:17

NVD link : CVE-2026-104458

Mitre link : CVE-2026-104458

CVE.ORG link : CVE-2026-104458

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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