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CRITICAL severity

CVE-2019-7537 — donfig

CRITICALFix: pytroll/donfig@1f9dbf8

CVE-2019-7537 is a critical-severity (CVSS 9.8) CWE-77 vulnerability in donfig. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for donfig — see the affected versions and patch details below.

Donfig Command Injection in collect_yaml method

Also known asGHSA-3qr5-h7w4-3gx3PYSEC-2019-21
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs89th percentile — riskier than 89% of all scored CVEsHighest risk
2.94%3.31%3.67%4.04%3.5%3.4%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍donfig

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

Description

An issue was discovered in Donfig 0.3.0. There is a vulnerability in the collect_yaml method in config_obj.py. It can execute arbitrary Python commands, resulting in command execution.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIdonfigall versions0.4.0pip install --upgrade 'donfig==0.4.0'

Affected Products

1 product · 1 configurations
Application
donfigpytroll
1 version
0.3.0
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

An issue was discovered in Donfig 0.3.0. There is a vulnerability in the…

github.comNVDMar 2019

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update donfig to 0.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-7537 is resolved across your whole dependency graph.

  3. Workarounds

    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

An issue was discovered in Donfig 0.3.0. There is a vulnerability in the collect_yaml method in config_obj.py. It can execute arbitrary Python commands, resulting in command execution.
O3 Security · Impact-Aware SCA

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CVE-2019-7537: donfig — Fixed in 0.4.0