---
cve: "CVE-2026-91750"
severity: "HIGH"
cvss: 7.1
epss: "0.3%"
vendor: "Tencent"
kev: false
exploited: false
published: "2026-09-15 01:16:54"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T16:51:03+02:00"
---

# CVE-2026-91750

> 7.1 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- e8dcbb07d09db88894601b564ebabe21dda6830d (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-91750) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_