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CVE-2026-50549

Anysphere Cursor remote code execution

9.8 CRITICALEPSS 1.01%
  1. Published25 Jun 2026

Description

Cursor is a code editor built for programming with AI. Prior to 3.0, Cursor runs agent terminal commands in a sandbox by default. Before a Write, the agent canonicalizes the target path to confirm it stays inside the workspace, but when canonicalization fails it falls back to the original path and writes without approval. A malicious agent can create an in-workspace symlink that points outside the workspace and force canonicalization to fail — either because the target does not exist or because read permission is removed from the path — so the agent writes through the symlink to an arbitrary location without approval. A malicious agent could 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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Anysphere Cursor< 3.0

Remediation

Fixed in
Anysphere Cursor≥ 3.0

References

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Frequently asked

Is CVE-2026-50549 being actively exploited?

CVE-2026-50549 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.01%.

How severe is CVE-2026-50549?

CVE-2026-50549 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.01% probability of exploitation.

Which products are affected by CVE-2026-50549?

Affected products include Anysphere Cursor.

How do I fix CVE-2026-50549?

Upgrade affected software to a fixed version, for example Anysphere Cursor 3.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-50549 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.