CVE-2026-91750 Details
Description
WeKnora before 0.7.0 fails to re-validate HTTP redirect targets in the POST /api/v1/knowledge-bases/:id/knowledge/url endpoint when downloading documents from user-supplied URLs. Authenticated attackers can bypass initial SSRF validation by supplying a public URL that redirects to internal network addresses, allowing access to internal services and cloud metadata.
A server-side request forgery (SSRF) vulnerability has been identified in WeKnora versions prior to 0.7.0. The issue arises in the POST /api/v1/knowledge-bases/:id/knowledge/url endpoint, where the application fails to properly re-validate HTTP redirect targets when downloading documents from user-supplied URLs. This oversight allows authenticated attackers to bypass initial SSRF protections by providing a public URL that redirects to internal network addresses. As a result, they can access internal services and cloud metadata from the server's network position.
Users can update to WeKnora version 0.8.0 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 15, 2026CISA-ADP
Assessed Sep 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Tencent/WeKnora/issues/2511 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/Tencent/WeKnora | [email protected] | ProductSource CodeVendor |
| https://github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_util.go#L339-L348 | [email protected] | Source CodeVendor |
| https://github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328 | [email protected] | Source CodeVendor |
| https://github.com/Tencent/WeKnora/issues/2511 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-redirects | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Tencent WeKnora | >= 0.5.2, < 0.7.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 16, 2026 | CVE Modified | CISA-ADP |
| Sep 15, 2026 | New CVE Received | [email protected] |