6.5Medium
CVE-2026-91750
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.
What this means for your business
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.3% chance of attack attempts being seen in the next 30 days, ranking above 18% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 6.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- CVSS v4
- 7.1
- Weakness
- CWE-918
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-09-15
- Last modified
- 2026-09-16
- Sources
- NVD
References
- https://github.com/Tencent/WeKnora
- https://github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_util.go#L339-L348
- https://github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328
- https://github.com/Tencent/WeKnora/issues/2511
- https://www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-redirects