CVE-2024-45296
path-to-regexp: Backtracking regular expressions cause ReDoS
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 10, 2024
Updated · October 31, 2026
Description
A flaw was found in path-to-regexp package, where it turns path strings into regular expressions. In certain cases, path-to-regexp will output a regular expression that can be exploited to cause poor performance. Because JavaScript is single-threaded and regex matching runs on the main thread, poor performance will block the event loop and lead to a denial of service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-1333 · Inefficient Regular Expression Complexity