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Vulnerabilities

Vulnerability · CVE-2025-54136

Cursor is a code editor built for programming with AI.

Published Aug 1, 2025 · catalog updated Aug 4, 2025 · Cursor is a code

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2025-54136 is not in CISA KEV. FIRST estimates a 28.52% chance of exploitation in the next 30 days. Check whether you run Cursor is a code.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Cursor is a code).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
28.52%
Remediation
Version ranges on file
Affected products
vendor cursor cursor < 1.3

Cursor is a code editor built for programming with AI. In versions 1.2.4 and below, attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target's machine. Once a collaborator accepts a harmless MCP, the attacker can silently swap it for a malicious command (e.g., calc.exe) without triggering any warning or re-prompt. If an attacker has write permissions on a user's active branches of a source repository that contains existing MCP servers the user has previously appr

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor cursor cursor < 1.3< 1.3

How to fix CVE-2025-54136

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-54136 is not in CISA KEV. FIRST estimates a 28.52% chance of exploitation in the next 30 days. Check whether you run Cursor is a code.

Which versions are affected?

Compare what you have installed with cursor cursor < 1.3 < 1.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 28.52%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 1, 2025 · EUVD

    Detected

    Cursor is a code editor built for programming with AI. In versions 1.2.4 and below, attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target's machine. Once a collaborator accepts a harmless MCP, the attacker can silently swap it for a malicious command (e.g., calc.e

  2. Aug 4, 2025 · EUVD

    Updated

    Cursor is a code editor built for programming with AI. In versions 1.2.4 and below, attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target's machine. Once a collaborator accepts a harmless MCP, the attacker can silently swap it for a malicious command (e.g., calc.e

Sources

  • CVE.orgVulnerability recordCVE-2025-54136

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-54136

    30-day exploitation probability 28.52%

    first.org
  • EUVDVulnerability recordEUVD-2025-23405

    Cursor is a code editor built for programming with AI. In versions 1.2.4 and below, attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target's mach

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 25, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 21, 2026