What is CVE-2026-44723?

CVE-2026-44723 is a medium-severity vulnerability in Vowpalwabbit Vowpal_wabbit, classified under OS Command Injection. CVSS score: 5.0/10. Published 2026-05-26.

How severe is CVE-2026-44723?

Medium severity. CVSS v3 base score is 5.0 out of 10.

RCE in Vowpalwabbit Vowpal_wabbit

CVE-2026-44723

Vowpal Wabbit is a machine learning system. The workflow .github/workflows/python_checks.yml embeds ${{ github.event.pull_request.title }} directly inside double-quoted bash strings in four separate steps across four jobs, each passing it…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.000 (14.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.

Affected products

Vowpalwabbit Vowpal_wabbit — versions < 998e390e80a7e8192d7849b7784bc113dbd190ad

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-44723?: CVE-2026-44723 is a medium-severity vulnerability in Vowpalwabbit Vowpal_wabbit, classified under OS Command Injection. CVSS score: 5.0/10. Published 2026-05-26.
How severe is CVE-2026-44723?: Medium severity. CVSS v3 base score is 5.0 out of 10.