{"id":"CVE-2026-118376","aliases":[],"title":"WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses","titleSource":"VulnCheck","descriptionSource":"VulnCheck","products":[{"vendor":"Tencent","name":"WeKnora","platforms":[],"versions":[{"version":"0.2.11","status":"affected","lessThan":"0.8.2","versionType":"semver"}],"defaultStatus":"unaffected","source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-118376"}],"remediation":[],"description":"WeKnora before 0.8.2 contains a server-side request forgery vulnerability in isRestrictedIP() that misclassifies NAT64-prefixed IPv6 addresses as public. Authenticated attackers can supply URLs resolving to NAT64 encodings of internal addresses via web_fetch or URL-based knowledge import to reach internal services or cloud metadata endpoints.","severity":"medium","score":6,"published":"2026-10-28T02:03:23.589Z","modified":"2026-10-28T16:11:20.194Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://github.com/Tencent/WeKnora/issues/4092","https://github.com/Tencent/WeKnora/commit/ff818b681f10bc29edbc48fe35f00009dc276bfa","https://github.com/Tencent/WeKnora/commit/d7ccd5ba517cc3968e6d5000a2ab0f4b51ef1dda","https://github.com/Tencent/WeKnora/blob/3d5d8bfcdfeeea266b292b71cea616847af28d0f/internal/utils/security.go#L267-L327","https://github.com/Tencent/WeKnora/releases/tag/v0.8.2","https://github.com/Tencent/WeKnora","https://www.vulncheck.com/advisories/weknora-before-0.8.2-ssrf-guard-bypass-via-nat64-ipv6-addresses"],"sources":[{"name":"CVE","id":"CVE-2026-118376","modified":"2026-10-28T16:11:20.194Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118376"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":6},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.3}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:15:32.897Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}