# CVE-2026-73658 — triggerdotdev trigger.dev

> As of 2026-08-14, CVE-2026-73658 is a HIGH-severity vulnerability in triggerdotdev trigger.dev, CVSS v3.1 8.2, EPSS 0.3% (26.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-73658 as of 2026-08-14; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-14

## What is CVE-2026-73658?

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.

The record classifies CVE-2026-73658 under weakness classes [CWE-20](https://intel.threadlinqs.com/cwe/CWE-20), [CWE-22](https://intel.threadlinqs.com/cwe/CWE-22), [CWE-862](https://intel.threadlinqs.com/cwe/CWE-862). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 53 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.2 — HIGH (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 26.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-13, last modified 2026-08-14

## Is CVE-2026-73658 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **triggerdotdev**: trigger.dev

## How to fix CVE-2026-73658

No vendor patch reference has been recorded for CVE-2026-73658 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-73658

No threat campaign in the Threadlinqs corpus currently references CVE-2026-73658, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-15. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-888c-px7m-736v)

**Other references**

- [github.com](https://github.com/triggerdotdev/trigger.dev/pull/3830)
- [github.com (db4074df54db06b0656becf3f974345c90fa202e)](https://github.com/triggerdotdev/trigger.dev/commit/db4074df54db06b0656becf3f974345c90fa202e)
- [github.com (v4.5.0 rc)](https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.0-rc.5)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-73658
Full detection coverage and IOCs for threats exploiting CVE-2026-73658 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp