index.js in the Anton Myshenin aws-lambda-multipart-parser NPM package before 0.1.2 has a Regular Expression Denial of Service (ReDoS) issue via a crafted multipart/form-data boundary string.
Severity
CVSS 3.1
7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-10-31)