CVE-2026-30858: Tencent Weknora

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a DNS rebinding vulnerability in the web_fetch tool allows an unauthenticated attacker to bypass URL validation and access internal resources on the server, including private IP addresses (e.g., 127.0.0.1, 192.168.x.x). By crafting a malicious domain that resolves to a public IP during validation and subsequently resolves to a private IP during execution, an attacker can access sensitive local services and potentially exfiltrate data. This issue has been patched in version 0.3.0.

Affected products

• Tencent Weknora: before 0.3.0 (fixed in 0.3.0)

Published 2026-03-07. Last modified 2026-06-17.