CVE-2026-118376
WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addresses
- State
- Published
- Severity
- 6.0 Medium
- Published
- Oct 28, 2026
- Updated
- Oct 28, 2026
- Reserved
- Oct 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | 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 | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
WeKnoraTencent |
|
References
- https://github.com/Tencent/WeKnora/issues/4092issue-tracking
- https://github.com/Tencent/WeKnora/commit/ff818b681f10bc29edbc48fe35f00009dc276bfapatch
- https://github.com/Tencent/WeKnora/commit/d7ccd5ba517cc3968e6d5000a2ab0f4b51ef1ddapatch
- https://github.com/Tencent/WeKnora/blob/3d5d8bfcdfeeea266b292b71cea616847af28d0f/internal/utils/security.go#L267-L327technical-description
- WeKnora v0.8.2 Release Notesrelease-notes
- https://github.com/Tencent/WeKnoraproduct
- VulnCheck Advisory: WeKnora before 0.8.2 SSRF Guard Bypass via NAT64 IPv6 Addressesthird-party-advisory
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