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TI-2026-04653 Aliases CVE-2026-5321GHSA-fp27-q2f5-phx3

vanna-ai vanna FastAPI/Flask Server cross-domain policy

Priority LOW 23CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-346.

Summary

A flaw has been found in vanna-ai vanna up to 2.0.2. Affected by this issue is some unknown functionality of the component FastAPI/Flask Server. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00165 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vanna-aivanna2.0.0; 2.0.1; 2.0.2—No fix listedCNA
  • vanna Vendorvanna-ai Affected 2.0.0; 2.0.1; 2.0.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5321
  2. 2026-10-03 Alias added: GHSA-fp27-q2f5-phx3

References

Exploit 1

  • TI-2024-05403 Arbitrary File Write by Prompt Injection via DuckDB SQL in vanna-ai/vanna CVSS 3.0CRITICAL 9.8
  • TI-2026-46836 Vanna 2.0.2 Path Traversal via FileSystemConversationStore CVSS 4.0HIGH 8.8
  • TI-2024-05402 Remote Code Execution via Prompt Injection in vanna-ai/vanna CVSS 3.0CRITICAL 9.8
  • TI-2024-07510 Server-Side Request Forgery (SSRF) in vanna-ai/vanna CVSS 3.0HIGH 8.3
  • TI-2024-07469 Local File Read (LFI) by Prompt Injection via SnowFlake SQL in vanna-ai/vanna CVSS 3.0HIGH 7.5
  • TI-2024-05342 Local File Read (LFI) by Prompt Injection via Postgres SQL in vanna-ai/vanna CVSS 3.0HIGH 7.5
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences