Inefficient regular expression complexity in Angular - CVE-2026-54268
Published: September 11, 2026
Vulnerability identifier: #VU149008
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54268
CWE-ID: CWE-1333
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to inefficient regular expression complexity in the formatDate function and Angular DatePipe when processing excessively long attacker-controlled date format strings. A remote attacker can supply a maliciously crafted date format string to cause a denial of service.
Exploitation requires the application to use formatDate or DatePipe with a date format string controlled by untrusted input.
Affected software
Angular
How to mitigate CVE-2026-54268
Install security update from vendor's website.
Angular - addressed in versions 20.3.25, 21.2.17, 22.0.1