CVE-2026-30858 MEDIUM

CVE-2026-30858: WeKnora: DNS Rebinding Vulnerability in web_fetch Tool Allows SSRF to Internal Resources

Vendor Tencent
Product WeKnora
Weakness CWE-918 · SSRF
Published March 7, 2026
Last update March 9, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 7, 2026 CVE published
March 9, 2026 Record updated