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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.015 (73.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.015 · change: -0.000
Affected products
- Semver-Regex — versions unspecified
- Semver-Regex Project
Weakness classification (CWE)
Public proof-of-concept exploits
References
- research.jfrog.com/vulnerabilities/semver-regex-redos-xray-211349/ (Exploit, Third Party Advisory)
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.