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.
References7
- github.com/Tencent/WeKnora
- github.com/Tencent/WeKnora/blob/3d5d8bfcdfeeea266b292b71cea6168…
- github.com/Tencent/WeKnora/commit/d7ccd5ba517cc3968e6d5000a2ab0…
- github.com/Tencent/WeKnora/commit/ff818b681f10bc29edbc48fe35f00…
- github.com/Tencent/WeKnora/issues/4092
- github.com/Tencent/WeKnora/releases/tag/v0.8.2
- www.vulncheck.com/advisories/weknora-before-0.8.2-ssrf-guard-by…
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 4.0
-
6.0
MEDIUM
Score source: CNA
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 - EPSS — exploit probability
- 0% percentile: 20 · as of 2 November 2026
- CWE
- CWE-918
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.