How severe is CVE-2026-30121?

CVE-2026-30121 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-30121 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30121?

CVE-2026-30121 affects Remotion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30121?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-30121 have an EU (EUVD) identifier?

Yes. CVE-2026-30121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36744.

When was CVE-2026-30121 published?

CVE-2026-30121 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-30121

CVE-2026-30121 is a critical-severity vulnerability in Remotion with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-123.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36744
Weakness: CWE-123
Affected product: Remotion
Published: 2026-06-15
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2026-30121?: remotion-dev remotion v4.0.409 was discovered to contain an arbitrary file write vulnerability.
How severe is CVE-2026-30121?: CVE-2026-30121 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-30121 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30121?: CVE-2026-30121 affects Remotion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30121?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-30121 have an EU (EUVD) identifier?: Yes. CVE-2026-30121 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36744.
When was CVE-2026-30121 published?: CVE-2026-30121 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://github.com/EaEa0001/security-advisories/blob/main/CVE-2026-30121.md

Affected products (1)

cpe:2.3:a:remotion:remotion:4.0.409:*:*:*:*:*:*:*

More vulnerabilities in Remotion

CVE-2026-30120 — Critical (CVSS 9.8): remotion-dev remotion v4.0.409 was discovered to contain a remote code execution (RCE) vulnerability.

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