Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck

CVE-2026-114086Trigger.dev before 4.5.5 Unauthenticated Realtime Stream Data Injection via Streams Endpoint

Medium 5.3

In plain English

A medium-severity missing authentication in trigger.dev from triggerdotdev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 67.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Trigger.dev before 4.5.5 contains a missing authentication vulnerability in the realtime streams POST handler that allows unauthenticated attackers to inject data into run streams. Attackers can send POST requests to /realtime/v1/streams/:runId/:streamId with a predictable run friendlyId to inject arbitrary data into any environment's realtime stream, including production.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	trigger.dev	4.5.5	GHSA-59h8-w5q6-mfmp

Affected products (as reported)

Vendor	Product	Versions
triggerdotdev	trigger.dev	0 – before 4.5.5

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

GitHub Security Advisory (GHSA-59h8-w5q6-mfmp) vendor-advisory
VulnCheck Advisory: Trigger.dev before 4.5.5 Unauthenticated Realtime Stream Data Injection via Streams Endpoint third-party-advisory