Out-of-bounds Write Affecting dash package, versions <0.5.12-12


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.14% (4th percentile)

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  • Snyk IDSNYK-ECHOLATEST-DASH-20334115
  • published30 Sept 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-102474  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Echo:latest dash to version 0.5.12-12 or higher.

NVD Description

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

A flaw was found in dash. The printf builtin reserves four bytes before converting a Unicode \u or \U escape, but the multi-byte token can need five or six bytes. A local user who can supply such an escape to dash printf or echo %b, including through dash -c and a positional argument, can write one or two bytes past that reservation.

CVSS Base Scores

version 3.1