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CRITICAL severity

CVE-2020-7794 — buns

CRITICAL

CVE-2020-7794 is a critical-severity (CVSS 9.8) OS Command Injection vulnerability in buns. No vendor fix is recorded yet; mitigation options are listed below.

Command injection in buns

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Oct 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.6%probability of exploitation in next 30 days
Lower Risk+0.02%
Lower risk than most CVEs75th percentile — riskier than 75% of all scored CVEsHighest risk
0.00%0.70%1.40%2.10%0.5%1.6%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2020-7794 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.

bunsnpm
69downloads / week

Description

There is a command injection vulnerability in all versions of package buns. The injection point is located in line 678 in index file lib/index.js in the exported function install(requestedModule).

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmbunsall versionsNo fix

Affected Products

1 product · 1 configurations
Application
bunsbuns_project
all

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    No patched version of buns has shipped for CVE-2020-7794 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

There is a command injection vulnerability in all versions of package buns. The injection point is located in line 678 in index file lib/index.js in the exported function install(requestedModule).
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CVE-2020-7794: buns: Command injection