CVE-2024-5979: PYSEC-2026-1437 - h2o vulnerable to unexpected POST request shutting down server

CVE-2024-5979 · Severity: low · CVSS 3 · Published 2026-07-07

h2o vulnerable to unexpected POST request shutting down server

Technologies: h2o (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2024-5979 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2024-5979 being exploited in the wild.
How severe is CVE-2024-5979?
Low severity, with a CVSS score of 3, published 7 July 2026.
Which products and versions are affected?
h2o (PyPI) ECOSYSTEM:introduced=0,last_affected=3.46.0.
Is there a fix for CVE-2024-5979?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2024-5979?
Check whether you run h2o (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • h2o (PyPI) ECOSYSTEM:introduced=0,last_affected=3.46.0

Identifiers

  • CVE-2024-5979
  • GHSA-58m3-rcvp-f9ww
  • PYSEC-2026-1437

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