Input validation error in brace-expansion - CVE-2026-33750
Published: April 28, 2026
Vulnerability identifier: #VU128397
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-33750
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
brace-expansion
brace-expansion
Software vendor:
Julian Gruber
Julian Gruber
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in sequence generation in expand() when parsing a brace pattern with a zero step value. A remote attacker can supply a specially crafted pattern to cause a denial of service.
User interaction is required to process the crafted input.
Remediation
Install security update from vendor's website.