CVE-2024-52798 path-to-regexp Unpatched `path-to-regexp` ReDoS in 0.1.x
Attackers can cause denial of service via ReDoS in path-to-regexp by providing malicious path strings that trigger excessive backtracking.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-52798?
CVE-2024-52798 is a high-severity denial of service vulnerability in pillarjs path-to-regexp, published on 5 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
path-to-regexp turns path strings into a regular expressions. In certain cases, path-to-regexp will output a regular expression that can be exploited to cause poor performance. The regular expression that is vulnerable to backtracking can be generated in the 0.1.x release of path-to-regexp. Upgrade to 0.1.12. This vulnerability exists because of an incomplete fix for CVE-2024-45296.
Weakness: CWE-1333
Which versions are affected by CVE-2024-52798?
2 open source packages ship an affected version, including path-to-regexp.
| Package | Affected | Fixed in |
|---|---|---|
path-to-regexp npm | All versions | 0.1.12 |
path-to-regexp npm | All versions | 0.1.12 |
How do I fix CVE-2024-52798?
Upgrade path-to-regexp to 0.1.12 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-52798 being exploited?
There is no known exploitation of CVE-2024-52798 in the wild and no public exploit code.
Sources
Also known as AZL-54017, AZL-54020, AZL-54036, CLEANSTART-2026-BK66130, CLEANSTART-2026-ZQ97544, CLSA-2026-1790520007 and 5 more.