CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2021-43307
High (7.5) in semver-regex project semver-regex. EPSS 1.6% chance of exploitation in the next 30 days. Fixed in semver-regex 3.1.4, 4.0.3.
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
Severity
- EPSS
- 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
- CWE
- CWE-1333
- Published
- Modified
- Record from
- the NVD, synced
Affected
- semver-regex_project:semver-regex
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4x5v-gmq8-25ch | npm | semver-regex | <3.1.4 | 3.1.4 |
| GHSA-4x5v-gmq8-25ch | npm | semver-regex | >=4.0.0 <4.0.3 | 4.0.3 |