CVE-2026-73658 Trigger.dev: Cross-tenant object store read and write via URL path traversal
Attackers with valid API keys can traverse paths to read or overwrite other tenants' task payloads in the object store.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73658?
CVE-2026-73658 is a high-severity path traversal vulnerability in triggerdotdev trigger.dev, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 4.4.2 until 4.5.0-rc.5, Aws4FetchClient.buildUrl() and Aws4FetchClient.presign() in apps/webapp/app/v3/objectStoreClient.server.ts assign user-controlled packet keys to URL.pathname, while apps/webapp/app/routes/api.v1.packets.$.ts accepts params["*"] without rejecting dot segments and uses findResource: async () => 1 without per-resource ownership validation. WHATWG path normalization collapses .. segments before signing, allowing a caller with a valid environment API key to obtain presigned URLs for another tenant's object-store keys and read or overwrite task payloads. This issue is fixed in version 4.5.0-rc.5.
Which versions are affected by CVE-2026-73658?
How do I fix CVE-2026-73658?
No fix has been published for CVE-2026-73658 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-73658 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73658 exists.
Sources
Also known as GHSA-888c-px7m-736v.