AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

AnthropicGHSA-9gqj-5w7c-vx47

Network Sandboxing Escape

Anthropic

CVE-2025-66479 · Published Dec 4, 2025

Low1.8
Fix: upgrade to 0.0.16 or later
GitHub advisory

Due to a bug in sandboxing logic, sandbox-runtime did not properly enforce a network sandbox if the sandbox policy did not configure any allowed domains. This could allow sandboxed code to make network requests outside of the sandbox. A patch for this was released in v0.0.16.

Thank you to https://github.com/bendrucker for reporting this issue!

Affected versions

PackageAffectedFixed in
@anthropic-ai/sandbox-runtime
npm
< 0.0.160.0.16
Details and references
CVSS 4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Severity from
GitHub (reviewed advisory)

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