Skip to main content
cvebuzz

CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2025-54136

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 approved, or allows an attacker has arbitrary file-write locally, the attacker can achieve arbitrary code execution. This is fixed in version 1.3.

CVSS 7.2 · HighBuzz score 27.6

Buzz score

Why this CVE is surfacing

Buzz score total 27.6

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 16.1 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
16.1
4 evidence mentions in the snapshot
Diversity score
11.5
3 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
1
within the 30d window
Peak daily
1
highest bucket

Evidence

Source links by recency

Newest mentions first
4 source links · newest first
  • Amazon Q VS Extension Flaw Leads to Cloud Credential TheftDark Reading

    rganizational artificial intelligence (AI) infrastructure. Researchers from Wiz Research discovered the bug, tracked as CVE-2026-12957 , in the Amazon Q Developer extension for Visual Studio Code, according to a recent blog post . The flaw stemmed from Amazon Q's handling of MCP, which by default automatically loaded and executed MCP server configurati

    newswww.darkreading.comJun 29, 2026, 11:44 AM
  • 11th August – Threat Intelligence ReportCheck Point Research

    For the latest discoveries in cyber research for the week of 11th August, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Air France has experienced a data breach that resulted in unauthorized access to customer data through a compromised external customer service platform. The attack exposed personal information, including names, email addresses, phone […]

    vendorresearch.checkpoint.comAug 11, 2025, 12:20 PM
  • CVE-2025-54136 – MCPoison Cursor IDE: Persistent Code Execution via MCP Trust BypassCheck Point Research

    By: Andrey Charikov, Roman Zaikin & Oded Vanunu Background Cursor is a developer-focused AI IDE that combines local code editing with large language model (LLM) integrations. Due to its flexibility and deep LLM integration, Cursor is increasingly adopted by startups, research teams, and individual developers looking to integrate AI tooling directly into their development workflow. […]

    vendorresearch.checkpoint.comAug 5, 2025, 12:53 PM
  • Several Vulnerabilities Patched in AI Code Editor CursorSecurityWeek

    Attackers could silently modify sensitive MCP files to trigger the execution of arbitrary code without requiring user approval.

    newswww.securityweek.comAug 4, 2025, 8:50 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-31854

    Cursor is a code editor built for programming with AI. Prior to 2.0 ,if a visited website contains maliciously crafted instructions, the model may attempt to follow them in order…

    CVSS 8.7 · High
    1 mention
  • CVE-2026-22708

    Cursor is a code editor built for programming with AI. Prior to 2.3, hen the Cursor Agent is running in Auto-Run Mode with Allowlist mode enabled, certain shell built-ins can stil…

    CVSS 7.2 · High
    2 mentions
  • CVE-2025-64106

    Cursor is a code editor built for programming with AI. In versions 1.7.28 and below, an input validation flaw in Cursor's MCP server installation enables specially crafted deep-li…

    CVSS 8.8 · High
  • CVE-2025-61591

    Cursor is a code editor built for programming with AI. In versions 1.7 and below, when MCP uses OAuth authentication with an untrusted MCP server, an attacker can impersonate a ma…

    CVSS 8.8 · High
  • CVE-2025-54135

    Cursor is a code editor built for programming with AI. Cursor allows writing in-workspace files with no user approval in versions below 1.3.9, If the file is a dotfile, editing it…

    CVSS 8.5 · High
    2 mentions
  • CVE-2025-54133

    Cursor is a code editor built for programming with AI. In versions 1.17 through 1.2, there is a UI information disclosure vulnerability in Cursor's MCP (Model Context Protocol) de…

    CVSS 5.3 · Medium