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CVE-2026-5320

| EUVD-2026-18120 MEDIUM
Missing Authentication for Critical Function (CWE-306)
2026-04-02 VulDB GHSA-j638-g9qc-36f4
5.5
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

5
CVSS changed
Apr 29, 2026 - 01:11 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
PoC Detected
Apr 03, 2026 - 16:10 vuln.today
Public exploit code
EUVD ID Assigned
Apr 02, 2026 - 04:30 euvd
EUVD-2026-18120
Analysis Generated
Apr 02, 2026 - 04:30 vuln.today
CVE Published
Apr 02, 2026 - 03:45 nvd
MEDIUM 6.9

DescriptionNVD

A vulnerability was detected in vanna-ai vanna up to 2.0.2. Affected by this vulnerability is an unknown functionality of the file /api/vanna/v2/ of the component Chat API Endpoint. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Missing authentication in vanna-ai vanna Chat API endpoint (/api/vanna/v2/) allows unauthenticated remote attackers to perform unauthorized operations with low-complexity attacks. Affects vanna-ai vanna versions up to 2.0.2. …

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RemediationAI

Within 24 hours: audit network access logs to vanna-ai API endpoints (/api/vanna/v2/) for unauthorized requests; isolate affected vanna-ai instances from untrusted networks if running versions ≤2.0.2. Within 7 days: implement network-level authentication controls (API gateway, WAF rules requiring authentication headers) as interim protection; contact vanna-ai vendor for patch timeline and status. …

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CVE-2026-5320 vulnerability details – vuln.today

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