Improper Access Control Affecting prefect package, versions <3.7.3-r0


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.8% (55th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PREFECT-16027547
  • published14 Apr 2026
  • disclosed6 Apr 2026

Introduced: 6 Apr 2026

CVE-2026-34444  (opens in a new tab)
CWE-284  (opens in a new tab)
CWE-639  (opens in a new tab)

How to fix?

Upgrade Chainguard prefect to version 3.7.3-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream prefect package and not the prefect package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Lupa integrates the runtimes of Lua or LuaJIT2 into CPython. In 2.6 and earlier, attribute_filter is not consistently applied when attributes are accessed through built-in functions like getattr and setattr. This allows an attacker to bypass the intended restrictions and eventually achieve arbitrary code execution.

CVSS Base Scores

version 3.1