What happened
Unauthenticated RCE in n8n via file read and expression injection sandbox bypass.
Affected versions
Unknown product: See original advisory Fixed: See vendor advisory.
Why it matters
This source correlation may provide earlier visibility while structured CVE metadata is still being updated.
Detection & mitigation
- Review the original advisory and validate affected versions.
- Apply vendor-provided updates or mitigations when available.
Public PoC references
RepositoryAuthorFirst seenReference
SploitusUnauthenticated RCE in n8n via file read and expression injection sandbox bypass.ZeroDayEvil2026-09-12T00:10:10VerifiedZeroDayEvil/CVE-2026-21858-n8n-FullChainUnauthenticated RCE in n8n via file read and expression injection sandbox bypass.ZeroDayEvil2026-09-12T00:10:10VerifiedSource timeline
Discovered through SploitusView source ↗
Record history
Record created from the first normalized source observation.
Metadata and source references refreshed.