How severe is GHSA-9gqj-5w7c-vx47?

No CVSS score has been assigned to GHSA-9gqj-5w7c-vx47 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-9gqj-5w7c-vx47?

GHSA-9gqj-5w7c-vx47 affects the following packages: @anthropic-ai/sandbox-runtime (npm). Ecosystems affected: npm.

How do I fix GHSA-9gqj-5w7c-vx47?

Update @anthropic-ai/sandbox-runtime to 0.0.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9gqj-5w7c-vx47 is resolved across your whole dependency graph.

How do I detect GHSA-9gqj-5w7c-vx47 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @anthropic-ai/sandbox-runtime. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-9gqj-5w7c-vx47 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-9gqj-5w7c-vx47?

O3 pinpoints whether GHSA-9gqj-5w7c-vx47 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-9gqj-5w7c-vx47 actively exploited in the wild?

No public exploit code has been indexed for GHSA-9gqj-5w7c-vx47 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-9gqj-5w7c-vx47?

GHSA-9gqj-5w7c-vx47 has an EPSS (Exploit Prediction Scoring System) score of 0.1%, placing it in the 3th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-9gqj-5w7c-vx47?

GHSA-9gqj-5w7c-vx47 is classified as CWE-693 (CWE-693). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-9gqj-5w7c-vx47 published, and has it been updated?

GHSA-9gqj-5w7c-vx47 was published on December 4, 2025 and was last updated on December 5, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-9gqj-5w7c-vx47: @anthropic-ai/sandbox-run…

EPSS Exploitation Probability

via FIRST.org ↗

0.1%probability of exploitation in next 30 days

Lower Risk3th percentile+0.09%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

📦@anthropic-ai/sandbox-runtime

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.

Description

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 Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`@anthropic-ai/sandbox-runtime`	all versions	0.0.16

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for @anthropic-ai/sandbox-runtime. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update @anthropic-ai/sandbox-runtime to 0.0.16 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9gqj-5w7c-vx47 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-9gqj-5w7c-vx47 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-9gqj-5w7c-vx47. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

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!

O3 Security · Impact-Aware SCA

Is GHSA-9gqj-5w7c-vx47 in your dependencies?

O3 detects GHSA-9gqj-5w7c-vx47 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

GHSA-9gqj-5w7c-vx47