Inefficient Regular Expression Complexity Affecting python3.12-debuginfo package, versions <0:3.12.14-2.amzn2023.0.1


Severity

Recommended
0.0
low
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON312DEBUGINFO-19476413
  • published1 Sept 2026
  • disclosed10 Aug 2026

Introduced: 10 Aug 2026

NewCVE-2026-18503  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3.12-debuginfo to version 0:3.12.14-2.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-2124.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.12-debuginfo package and not the python3.12-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Attacker-controlled CSV samples can trigger super-linear regular-expression work during dialect sniffing and consume significant CPU when applications pass unbounded input to csv.Sniffer.sniff().

CVSS Base Scores

version 3.1