What is CVE-2026-30121?

CVE-2026-30121 is a critical-severity vulnerability in Remotion, classified under Write-what-where Condition. CVSS score: 9.1/10. Published 2026-06-15.

How severe is CVE-2026-30121?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Remotion

CVE-2026-30121

remotion-dev remotion v4.0.409 was discovered to contain an arbitrary file write vulnerability.

EPSS: 0.003 (24.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Remotion — versions 4.0.409
N/a — versions n/a

Weakness classification (CWE)

CWE-123 — Write-what-where Condition

References

cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-30121?: CVE-2026-30121 is a critical-severity vulnerability in Remotion, classified under Write-what-where Condition. CVSS score: 9.1/10. Published 2026-06-15.
How severe is CVE-2026-30121?: Critical severity. CVSS v3 base score is 9.1 out of 10.