Improper Authorization in CherryHQ Cherry-Studio Affects MCP OAuth Local Callback Server
CVE-2026-13524

6.3MEDIUM

Key Information:

Vendor

Cherryhq

Status
Cherry-studio
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13524?

A security vulnerability has been identified in CherryHQ's cherry-studio, specifically in the MCP OAuth Local Callback Server's handling of the OAuth callback. This issue affects versions up to 1.9.6, allowing remote attackers to manipulate authorization arguments. Exploiting this vulnerability poses significant challenges due to its complexity level, making it difficult to execute. The issue has been disclosed publicly, with a pending pull request aimed at addressing the flaw. Users of affected versions are advised to monitor updates closely and apply patches when available.

Affected Version(s)

cherry-studio 1.9.0

cherry-studio 1.9.1

cherry-studio 1.9.2

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-2026-13524 - Proof of Concept

References

https://vuldb.com/vuln/374532
vdb-entrytechnical-description
https://vuldb.com/vuln/374532/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13524
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

dem0000 (VulDB User)
VulDB CNA Team
.