CVE-2026-118376 | BDVDB-2026-397315 Detail
TencentWeKnora
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-918 Server-Side Request Forgery (SSRF)
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
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.