HighVulnerability

CVE-2026-61613: Cursor Cloud Agent code execution via unauthenticated local agent endpoint

Source: NVD(opens in a new tab)
Identifier: CVE-2026-61613
Published: July 15, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.7%

Summary

Prior to the Cloud Agent fix on 03/31/2026, browser-enabled Cursor Cloud Agent sessions let attacker-controlled web content connect from inside the agent container to an unauthenticated local agent endpoint. This enabled code execution within the affected Cloud Agent sandbox or session, and access to files, repository contents, environment variables, credentials, and GitHub App access tokens available to that session.

Mitigation

This issue was fixed on 03/31/2026 by requiring authentication for the relevant agent endpoint.

Details

Scores and exploitation

EPSS: 0.7%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 12, 2026.
Disclosure date: July 15, 2026

Weaknesses and techniques

Weakness (CWE): CWE-306
Attack pattern (CAPEC): CAPEC-115

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Agent
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-61613

First tracked: July 15, 2026 at 02:07 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

Related items