Tencent WeKnora up to 0.2.11 Import document via URL server-side request forgery

Summaryinfo

A vulnerability was found in Tencent WeKnora up to 0.2.11. It has been rated as critical. This affects an unknown part of the component Import document via URL. This manipulation causes server-side request forgery. This vulnerability is registered as CVE-2026-30247. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Tencent WeKnora up to 0.2.11. Affected by this vulnerability is an unknown function of the component Import document via URL. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application's "Import document via URL" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-30247 since 03/04/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 0.2.12 eliminates this vulnerability.

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Productinfo

Vendor

• Tencent

Name

• WeKnora

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11

Website

• Product: https://github.com/Tencent/WeKnora/

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