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PatchSiren cyber security CVE debrief

CVE-2026-30121 remotion-dev CVE debrief

CVE-2026-30121 is an arbitrary file write vulnerability in remotion-dev remotion v4.0.409. The vulnerability was publicly disclosed on June 15, 2026. The CVE record was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-30121) and additional details can be found on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-30121). A source reference is available at [ref-4](https://github.com/EaEa0001/security-advisories/blob/main/CVE-2026-30121.md).

Vendor
remotion-dev
Product
remotion
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-17
Advisory published
2026-06-15
Advisory updated
2026-06-17

Who should care

Users of remotion-dev remotion v4.0.409 should be aware of this arbitrary file write vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability allows an attacker to write arbitrary files, potentially leading to security issues such as code execution or data tampering.

Defensive priority

High

Recommended defensive actions

  • Update to a patched version of remotion-dev remotion if available.
  • Review and restrict write permissions to sensitive files and directories.
  • Monitor for suspicious activity and implement additional security measures as needed.

Evidence notes

The CVE record and NVD details indicate an arbitrary file write vulnerability in remotion-dev remotion v4.0.409.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-30121 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-30121

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-30121 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-30121

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.