What is CVE-2021-23429?

CVE-2021-23429 is a medium-severity vulnerability in Transpile Project, classified under Improper Handling of Exceptional Conditions. CVSS score: 6.5/10. Published 2021-08-24.

How severe is CVE-2021-23429?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Transpile Project

CVE-2021-23429

All versions of package transpile are vulnerable to Denial of Service (DoS) due to a lack of input sanitization or whitelisting, coupled with improper exception handling in the .to() function.

Published 2021-08-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Transpile Project
Transpile — versions 0

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

References

snyk.io/vuln/SNYK-JS-TRANSPILE-1290774 (Exploit, Third Party Advisory)
github.com/stealjs/transpile/blob/56aaeb26f69496e45a60c03dc92653d53021d4ac/main… (Broken Link)

Frequently asked questions

What is CVE-2021-23429?: CVE-2021-23429 is a medium-severity vulnerability in Transpile Project, classified under Improper Handling of Exceptional Conditions. CVSS score: 6.5/10. Published 2021-08-24.
How severe is CVE-2021-23429?: Medium severity. CVSS v3 base score is 6.5 out of 10.