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ExploitedPHP2Shell is now on CISA KEV

critical vulnerability

External Control of File Name or Path in h2oai/h2o-3

Fix availableCritical · CVSS 9.3EPSS 0.72%

Published Dec 14, 2023 · updated Oct 27, 2026

What to do

  1. Upgrade to a fixed version: h2o 3.46.0.1.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

PyPIh2o38,406 downloads/week

Vulnerable versions
< 3.46.0.1
Fixed in
3.46.0.1

Check your project: pip show h2o

Sources

CWE-73 External Control of File Name or Path · CWE-610 Externally Controlled Reference to a Resource in Another Sphere

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