DNS Rebinding Vulnerability in WeKnora Framework by Tencent
CVE-2026-30858

6.5MEDIUM

Key Information:

Vendor

Tencent

Status
Weknora
Vendor
CVE Published:
7 March 2026

What is CVE-2026-30858?

The WeKnora framework, developed by Tencent for enhanced document understanding, contains a vulnerability in the web_fetch tool prior to version 0.3.0. This flaw allows unauthenticated attackers to exploit DNS rebinding techniques to circumvent URL validation. By directing valid requests to a malicious domain that points to a public IP during validation and resolves to a private IP during execution, attackers can gain unauthorized access to sensitive internal resources, including local services and private IP addresses. This weakness poses significant risks as it may enable potential data exfiltration. The issue has been resolved in the updated version 0.3.0.

Affected Version(s)

WeKnora < 0.3.0

References

https://github.com/Tencent/WeKnora/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.