How severe is GHSA-876r-hj45-fw7g?

No CVSS score has been assigned to GHSA-876r-hj45-fw7g yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-876r-hj45-fw7g?

GHSA-876r-hj45-fw7g affects the following packages: safer-eval (npm). Ecosystems affected: npm.

How do I fix GHSA-876r-hj45-fw7g?

No patched version of safer-eval has shipped for GHSA-876r-hj45-fw7g yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

How do I detect GHSA-876r-hj45-fw7g in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for safer-eval, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-876r-hj45-fw7g 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.

Is GHSA-876r-hj45-fw7g actively exploited in the wild?

No public exploit code has been indexed for GHSA-876r-hj45-fw7g 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.

When was GHSA-876r-hj45-fw7g published, and has it been updated?

GHSA-876r-hj45-fw7g was published on September 3, 2020 and was last updated on August 31, 2020. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

Sandbox Breakout / Arbitrary Code Execution in safer-evalGHSA-876r-hj45-fw7g

GHSA-876r-hj45-fw7g is a remote code execution vulnerability in safer-eval. No vendor fix is recorded yet; mitigation options are listed below.

Published

Sep 3, 2020

Updated

Aug 31, 2020

Affected

1 pkg

Patched

None yet

Exploits

None indexed

Exploitation data as of Aug 31, 2020 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

📦safer-eval

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

All versions of safer-eval are vulnerable to Sandbox Escape leading to Remote Code Execution. It is possible to escape the sandbox by forcing exceptions recursively in the evaluated code. This may allow attacker to execute arbitrary code in the system.

Recommendation

The package is not suited to receive arbitrary user input. Consider using an alternative package.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
📦npm	`safer-eval`	≥ 0.0.0	No fix

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for safer-eval, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of safer-eval has shipped for GHSA-876r-hj45-fw7g yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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.

Frequently Asked Questions

All versions of `safer-eval` are vulnerable to Sandbox Escape leading to Remote Code Execution. It is possible to escape the sandbox by forcing exceptions recursively in the evaluated code. This may allow attacker to execute arbitrary code in the system. ## Recommendation The package is not suited to receive arbitrary user input. Consider using an alternative package.

O3 Security · Impact-Aware SCA

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