{"id":"CVE-2026-104458","revision":"af1cb2ecc011401d903f295d87f53a5a","records":[{"revision":"af1cb2ecc011401d903f295d87f53a5a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104458","aliases":[],"title":"YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses","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.","state":0,"publishedAt":"2026-10-02T11:38:27.66+00:00","modifiedAt":"2026-10-02T14:10:28.799+00:00","affected":[{"ecosystem":"Vendor product","name":"yeswiki","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"YesWiki\",\n                    \"product\": \"yeswiki\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.6.7\"\n                        },\n                        {\n                            \"version\": \"4.6.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104458","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104458","identifiers":["CVE-2026-104458"]},"retained":false,"historicalAffected":[]}],"coverage":[]}