High severity · published Aug 13, 2026
CVE-2026-73658
Trigger.dev: Cross-tenant object store read and write via URL path traversal
8.2
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TR
trigger.dev · triggerdotdev
>= 4.4.2, < 4.5.0-rc.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73658
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73658
github.com
https://github.com/triggerdotdev/trigger.dev/commit/db4074df54db06b0656becf3f974345c90fa202e
github.com
https://github.com/triggerdotdev/trigger.dev/pull/3830
github.com
https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.0-rc.5
github.com
https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-888c-px7m-736v
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