EUVD-2026-36744
GHSA-g6pc-6676-c23j
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Arbitrary file write reachable over the network without auth or user interaction per description and CWE-123; no confidentiality impact from a pure write primitive, high integrity and availability.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Lifecycle Timeline
3Blast Radius
ecosystem impact- 28 npm packages depend on remotion (27 direct, 8 indirect)
Ecosystem-wide dependent count for version 4.0.410.
DescriptionCVE.org
remotion-dev remotion v4.0.409 was discovered to contain an arbitrary file write vulnerability.
AnalysisAI
Arbitrary file write in remotion-dev Remotion v4.0.409 allows remote attackers to write attacker-controlled content to arbitrary filesystem locations without authentication, per the CVSS:3.1 vector (AV:N/AC:L/PR:N/UI:N) and CWE-123 (Write-what-where) classification. Remotion is a React-based programmatic video rendering framework, and the flaw can lead to integrity and availability compromise of the host running the rendering engine. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be able to reach a Remotion v4.0.409 instance over the network and reach the code path that performs the file write - based on CVSS PR:N/UI:N this requires no authentication and no user interaction, and AC:L indicates no special timing or environment is needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals diverge sharply: CVSS 9.1 reflects an unauthenticated network-reachable write with high integrity and availability impact, but EPSS (0.15%, 4th percentile) and the absence of any KEV listing or public PoC suggest real-world exploitation is unlikely in the short term. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker reaches a network-exposed Remotion render endpoint (for example a self-hosted Remotion server, studio, or Lambda-style render API) and submits a render request whose output path or asset filename contains a traversal sequence or absolute path, causing Remotion to write attacker-controlled bytes to a sensitive location such as a Node startup script, cron file, or systemd unit. On the next process restart the planted file executes, converting the file-write primitive into code execution on the host. … |
| Remediation | No vendor-released patch identified at time of analysis - the supplied data does not name a fixed Remotion release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all systems running Remotion v4.0.409 and assess network exposure; restrict network access to Remotion services to trusted sources only. …
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Same weakness CWE-123 – Write-what-where Condition
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External POC / Exploit Code
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