# CVE-2026-91750

## Summary

- **CVE ID:** CVE-2026-91750
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-918
- **Published:** Sep 15, 2026
- **Last Modified:** Sep 16, 2026

## 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.

## Affected Products

- Tencent — WeKnora (0.5.2)

## References

- [CNA](https://github.com/Tencent/WeKnora/issues/2511)
- [CNA](https://github.com/Tencent/WeKnora)
- [CNA](https://github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328)
- [CNA](https://github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_util.go#L339-L348)
- [CNA](https://www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-redirects)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 18.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._