CVE-2026-39861

unknown

Published 2026-04-21 · Modified 2026-05-05

CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v2

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VIR risk

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Description

Claude Code: Sandbox Escape via Symlink Following Allows Arbitrary File Write Outside Workspace

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Package impact

Ecosystem	Package	Vulnerable	Fixed
npm	@anthropic-ai/claude-code	`<2.1.64`	`2.1.64`

References

Verify integrity in audit chain (admin only). AS-IS.