Path Traversal Vulnerability in Vanna by Vanna Ltd.
CVE-2026-65702

8.8HIGH

Key Information:

Vendor

Vanna-ai

Status
Vanna
Vendor
CVE Published:
23 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-65702?

The Vanna application prior to version 2.0.2 has a path traversal flaw within its FileSystemConversationStore persistence integration. This vulnerability permits unauthenticated remote attackers to exploit the conversation_id parameter in the chat API. By injecting path traversal sequences, attackers can evade the designated base directory during file read and write actions. This may lead to unauthorized writing of JSON files to any location in the filesystem and the ability to read sensitive conversation metadata outside the intended directory, posing significant security risks to users and server data integrity.

Affected Version(s)

vanna 0 <= 2.0.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-65702 - Proof of Concept

References

https://github.com/geo-chen/oss/blob/main/vanna.md
technical-descriptionexploit
https://www.vulncheck.com/advisories/vanna-path-traversal...
third-party-advisory

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.