This affects the package npm-user-validate before 1.0.1. The regex that validates user emails took exponentially longer to process long input strings beginning with @ characters.
https://github.com/npm/npm-user-validate/security/advisories/GHSA-xgh6-85xh-479p
https://github.com/npm/npm-user-validate/commit/c8a87dac1a4cc6988b5418f30411a8669bef204e
https://snyk.io/vuln/SNYK-JS-NPMUSERVALIDATE-1019352
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1019353
Source: Mitre, NVD
Published: 2020-10-27
Updated: 2024-11-21
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
EPSS: 0.00659