Vulnerability in Semver-Regex
CVE-2021-43307
An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the semver-regex npm package, when an attacker is able to supply arbitrary input to the test() method
Vulnerability class: ReDoS (Regular Expression Denial of Service)
EPSS: 0.016 (72.6th 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
- Semver-regex — versions unspecified
- Semver-regex_project Semver-regex
Weakness classification (CWE)
Public proof-of-concept exploits
References
- reefs@jfrog.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43307?
- CVE-2021-43307 is a medium-severity vulnerability in Semver-Regex, classified under Inefficient Regular Expression Complexity. CVSS score: 5.9/10. Published 2022-06-02.
- How severe is CVE-2021-43307?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2021-43307 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.