CVE-2026-30858
Published: 07 March 2026
Summary
CVE-2026-30858 is a medium-severity SSRF (CWE-918) vulnerability in Tencent Weknora. Its CVSS base score is 6.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
This vulnerability is AI-related — categorised as Other AI Platforms.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
SSRF via DNS rebinding in public web_fetch tool directly enables T1190 to reach internal endpoints; resulting access to local services/private IPs enables T1005 data collection.
NVD Description
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,…
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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.
Deeper analysisAI
CVE-2026-30858 is a DNS rebinding vulnerability in the web_fetch tool of WeKnora, an LLM-powered framework designed for deep document understanding and semantic retrieval. Versions of WeKnora prior to 0.3.0 are affected. The flaw enables bypassing URL validation, allowing access to internal resources on the server, including private IP addresses such as 127.0.0.1 and 192.168.x.x.
An unauthenticated attacker can exploit this vulnerability by crafting a malicious domain that resolves to a public IP address during the validation phase but subsequently resolves to a private IP during execution. This grants access to sensitive local services and enables potential data exfiltration. The vulnerability carries a CVSS v3.1 base score of 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) and is associated with CWE-918 (Server-Side Request Forgery).
The vulnerability has been patched in WeKnora version 0.3.0. Additional details on the advisory and mitigation are available in the GitHub security advisory at https://github.com/Tencent/WeKnora/security/advisories/GHSA-h6gw-8f77-mmmp.
Details
- CWE(s)
Affected Products
AI Security AnalysisAI
- AI Category
- Other AI Platforms
- Risk Domain
- N/A
- OWASP Top 10 for LLMs 2025
- None mapped
- Classification Reason
- Matched keywords: llm