CVE-2026-13524Public exploitNetwork attack vector

Login CSRF via missing OAuth state validation

Published Jun 29, 2026 · Updated Jun 29, 2026

Login CSRF in CherryHQ Cherry Studio 1.9.0 through 1.9.6 allows remote attackers to bind an MCP OAuth flow to an attacker code. The loopback callback server accepts the first code-bearing path-prefix request, omits transaction-bound state validation, and passes that code to finishAuth. Exploitation requires a pending five-minute MCP OAuth window and browser-mediated or local loopback access; the confirmed result is wrong-code exchange and service-binding confusion.

CVSS severity5.6
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Login CSRF in CherryHQ Cherry Studio 1.9.0 through 1.9.6 allows remote attackers to bind an MCP OAuth flow to an attacker code. The loopback callback server accepts the first code-bearing path-prefix request, omits transaction-bound state validation, and passes that code to finishAuth. Exploitation requires a pending five-minute MCP OAuth window and browser-mediated or local loopback access; the confirmed result is wrong-code exchange and service-binding confusion.

The record

CVE
CVE-2026-13524
Published
Jun 29, 2026
Updated
Jun 29, 2026
Vendor
CherryHQ
Product
Cherry Studio
Classifications
CWE-266, CWE-285
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.9.0
  2. Affected versionversion=1.9.1
  3. Affected versionversion=1.9.2
  4. Affected versionversion=1.9.3
  5. Affected versionversion=1.9.4
  6. Affected versionversion=1.9.5
  7. Affected versionversion=1.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CherryHQ · Cherry Studioversion=1.9.0; version=1.9.1; version=1.9.2; version=1.9.3; version=1.9.4; version=1.9.5; version=1.9.6

Published CVSS scores

5.6VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment for Critical Resource
CWE-285Improper Authorization

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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