Inefficient Regular Expression Complexity Affecting dash package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-UBUNTU2204-DASH-20338757
  • published16 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-102473  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:22.04 dash.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dash package and not the dash package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

A flaw was found in dash. When built without libc fnmatch, the internal pmatch() matcher implements * by unbounded recursion over candidate positions. A local user who can plant filenames, or otherwise feed that matcher, can make a short multi-star pattern such as ....*.tar.gz consume excessive CPU.

CVSS Base Scores

version 3.1