Vulnerability in Litejs Uri-Template-Lite
CVE-2021-43309
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the uri-template-lite npm package, when an attacker is able to supply arbitrary input to the "URI.expand" method
Vulnerability class: ReDoS (Regular Expression Denial of Service)
EPSS: 0.009 (54.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Litejs Uri-template-lite
- Uri-template-lite — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- reefs@jfrog.com (Exploit, Third Party Advisory, x_refsource_MISC)
- reefs@jfrog.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43309?
- CVE-2021-43309 is a medium-severity vulnerability in Litejs Uri-Template-Lite, classified under Inefficient Regular Expression Complexity. CVSS score: 5.9/10. Published 2022-08-24.
- How severe is CVE-2021-43309?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2021-43309 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.