Path Traversal in Anysphere Cursor
CVE-2026-50548
Cursor is a code editor built for programming with AI. Prior to 3.0, Cursor runs agent terminal commands in a sandbox by default, and the sandbox grants write access to the command's working directory. A flaw was identified in how the agent could modify the working_directory parameter, which could cause the sandbox to include writable paths outside the intended workspace. A malicious agent could set working_directory to a sensitive location and write arbitrary files outside the workspace under the user's privileges. This enables non-sandboxed Remote Code Execution — for example by overwriting the cursorsandbox helper so later commands run unsandboxed — with no user interaction beyond a benign prompt. This vulnerability is fixed in 3.0.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Anysphere Cursor
- Cursor — versions < 3.0
Weakness classification (CWE)
References
- github.com/cursor/cursor/security/advisories/GHSA-3p48-7v9f-v5cw (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-50548?
- CVE-2026-50548 is a critical-severity vulnerability in Anysphere Cursor, classified under Path Traversal. CVSS score: 9.8/10. Published 2026-06-25.
- How severe is CVE-2026-50548?
- Critical severity. CVSS v3 base score is 9.8 out of 10.