CVE-2021-43307

Published: Jun 2, 2022Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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

Affected (2)

Products: Semver Regex Project: Semver Regex

Semver Regex Project

1 product

Semver Regex

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Semver Regex Project Semver Regex	Before 3.1.4
Semver Regex Project Semver Regex	From 4.0.0 to 4.0.3

Related CWEs

CWE-1333

Inefficient Regular Expression Complexity

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

References (2)

https://research.jfrog.com/vulnerabilities/semver-regex-redos-xray-211349/

Source: reefs@jfrog.com

ExploitThird Party Advisory

https://research.jfrog.com/vulnerabilities/semver-regex-redos-xray-211349/

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.