CVE-2026-13524 CherryHQ cherry-studio MCP OAuth Local Callback Server callback.ts improper authorization
Attackers can bypass authorization in the MCP OAuth callback server to potentially gain unauthorized access, affecting Cherry Studio users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13524?
CVE-2026-13524 is a medium-severity missing authorization vulnerability in CherryHQ cherry-studio, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in CherryHQ cherry-studio up to 1.9.6. This vulnerability affects unknown code of the file src/main/services/mcp/oauth/callback.ts of the component MCP OAuth Local Callback Server. The manipulation of the argument code leads to improper authorization. The attack can be initiated remotely. The attack is considered to have high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.
Which versions are affected by CVE-2026-13524?
How do I fix CVE-2026-13524?
No fix has been published for CVE-2026-13524 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-13524 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-13524 exists.
Sources
Also known as GHSA-9c5h-h4mj-p5ch.