CherryHQ cherry-studio MCP OAuth Local Callback Server callback.ts improper authorization (CVE-2026-13524) | HOL Guard CVE

Medium · CVSS 5.6CVE-2026-13524

CherryHQ cherry-studio MCP OAuth Local Callback Server callback.ts improper authorization

Answer in brief

CVE-2026-13524 records a Medium severity (CVSS 5.6) vulnerability in CherryHQ cherry-studio MCP OAuth Local Callback Server callback.ts improper authorization. The current sources do not mark it as known exploited. The current feed maps CherryHQ/cherry-studio (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 29, 2026Updated Jun 30, 2026Source checked Sep 19, 2026First seen by HOL Jun 29, 2026Material review Jun 30, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.6
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps CherryHQ/cherry-studio (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
CherryHQ/cherry-studiogeneric	1.9.0 \|\| 1.9.1 \|\| 1.9.2 \|\| 1.9.3 \|\| 1.9.4 \|\| 1.9.5 \|\| 1.9.6	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for CherryHQ/cherry-studio.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Jun 29, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jun 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jun 29, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.