---
id: CVE-2026-91750
title: >-
  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
summary: >-
  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…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: Tencent
product: WeKnora
affected:
  - WeKnora >= 0.5.2 < 0.7.0
published: '2026-09-15'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:47.813'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91750'
references:
  - url: 'https://github.com/Tencent/WeKnora'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_util.go#L339-L348
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Tencent/WeKnora/issues/2511'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-redirects
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Tencent/WeKnora/issues/2511'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00436
epssPercentile: 0.35163
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T16:54:08.362553Z'
ingestedAt: '2026-09-15T01:18:29.936Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.