{"id":"CVE-2026-118376","aliases":["EUVD-2026-111552","GHSA-29gq-28qv-vr5m"],"status":"published","title":"WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses","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":{"version":"4.0","score":6,"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00273,"percentile":0.19927,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-10-28T02:03:23Z","modified":"2026-10-30T02:31:02Z","products":[{"vendor":"tencent","product":"weknora"}],"references":[{"url":"https://github.com/Tencent/WeKnora/issues/4092","tags":["issue-tracking","report"]},{"url":"https://github.com/Tencent/WeKnora/commit/ff818b681f10bc29edbc48fe35f00009dc276bfa","tags":["patch","fix"]},{"url":"https://github.com/Tencent/WeKnora/commit/d7ccd5ba517cc3968e6d5000a2ab0f4b51ef1dda","tags":["patch","fix"]},{"url":"https://github.com/Tencent/WeKnora/blob/3d5d8bfcdfeeea266b292b71cea616847af28d0f/internal/utils/security.go#L267-L327","tags":["technical-description","article"]},{"url":"https://github.com/Tencent/WeKnora/releases/tag/v0.8.2","tags":["release-notes","advisory"]},{"url":"https://github.com/Tencent/WeKnora","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/weknora-before-0.8.2-ssrf-guard-bypass-via-nat64-ipv6-addresses","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118376","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-29gq-28qv-vr5m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118376.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-118376","title":"WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses","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.","status":"published","published":"2026-10-28T02:03:23.589Z","modified":"2026-10-28T16:11:20.194Z","cvss":[{"version":"4.0","score":6,"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","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:20:03.827373Z"}],"euvd":[{"id":"EUVD-2026-111552","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.","status":"published","published":"2026-10-28T02:03:23Z","modified":"2026-10-28T16:11:20Z","cvss":[{"version":"4.0","score":6,"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","level":"medium"}],"updated_at":"2026-11-02T16:59:20.41252Z"}],"ghsa":[{"id":"GHSA-29gq-28qv-vr5m","title":"WeKnora before 0.8.2 contains a server-side request forgery vulnerability in isRestrictedIP()...","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.","status":"published","published":"2026-10-28T03:31:52Z","modified":"2026-10-28T03:31:58Z","cvss":[{"version":"4.0","score":6,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:14:32.579072Z"}],"nvd":[{"id":"CVE-2026-118376","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.","status":"published","published":"2026-10-28T03:17:14.23Z","modified":"2026-10-28T17:18:25.85Z","cvss":[{"version":"4.0","score":6,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:13:04.037468Z"}],"osv":[{"id":"CVE-2026-118376","title":"WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses","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.","status":"published","published":"2026-10-28T02:03:23.589Z","modified":"2026-10-30T02:31:02.150952642Z","cvss":[{"version":"4.0","score":6,"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","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:44:57.008854Z"}]}}