Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Trigger.dev versions before 4.5.5 (npm package trigger.dev) expose a POST endpoint for realtime streams that has no authentication. An attacker who knows or can guess a run's friendlyId, which the source says can be predictable, and who can reach the endpoint over the network, can inject arbitrary data into that run's realtime stream, including runs in other environments. The source describes the impact as unauthenticated data injection. Upgrade to version 4.5.5 or later, which is the listed fixed version.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.9 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0038, the 32nd percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:33 UTC First seen by agentprime
- 31 Oct 2026, 13:33 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-59h8-w5q6-mfmp
- OSV: GHSA-59h8-w5q6-mfmp
- github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-59h8-w5q6-mfmp
- github.com/triggerdotdev/trigger.dev/pull/4250
- github.com/triggerdotdev/trigger.dev/commit/73d966ad226548b5f96fb5b4fc6fa607a3b7b8f8
- github.com/triggerdotdev/trigger.dev
- github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.5