{"id":"CVE-2026-118376","title":"WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses","summary":"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 ad…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-918"],"vendor":"Tencent","product":"WeKnora","affected":["WeKnora >= 0.2.11 < 0.8.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-28T14:35:39.639974Z"},"published":"2026-10-28","updated":"2026-10-28","sourceUpdated":"2026-10-28T16:11:20.194Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118376","references":[{"url":"https://github.com/Tencent/WeKnora/issues/4092"},{"url":"https://github.com/Tencent/WeKnora/commit/ff818b681f10bc29edbc48fe35f00009dc276bfa"},{"url":"https://github.com/Tencent/WeKnora/commit/d7ccd5ba517cc3968e6d5000a2ab0f4b51ef1dda"},{"url":"https://github.com/Tencent/WeKnora/blob/3d5d8bfcdfeeea266b292b71cea616847af28d0f/internal/utils/security.go#L267-L327"},{"url":"https://github.com/Tencent/WeKnora/releases/tag/v0.8.2","label":"WeKnora v0.8.2 Release Notes"},{"url":"https://github.com/Tencent/WeKnora"},{"url":"https://www.vulncheck.com/advisories/weknora-before-0.8.2-ssrf-guard-bypass-via-nat64-ipv6-addresses","label":"VulnCheck Advisory: WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses"}],"tags":["cve.org"],"epss":0.00273,"epssPercentile":0.19654,"ingestedAt":"2026-10-28T03:02:57.621Z","slug":"CVE-2026-118376","body":"## Overview\n\nWeKnora 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.\n\n## Affected\n\n- `WeKnora >= 0.2.11 < 0.8.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}