WeKnora — Data Exfiltration (CVE-2026-30858)
Date: 2026-03
Affected: tencent/weknora
Attack vector: data-exfiltration
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-30858
CWE: CWE-918
CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

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.


Mitigations:

Architectural layers (MAESTRO):