# CVE-2026-57494 — agenticmail @agenticmail/api

> As of 2026-07-21, CVE-2026-57494 is a High-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in agenticmail @agenticmail/api, CVSS v4.0 7.1, EPSS 0.2% (12.5th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-57494 as of 2026-07-21; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-21

## What is CVE-2026-57494?

AgenticMail gives AI agents real email addresses and phone numbers. In @agenticmail/api prior to version 0.9.64, a low-privileged authenticated AgenticMail agent can enumerate another agent's pending/claimed tasks by supplying the target agent name to `GET /api/agenticmail/tasks/pending?assignee=`. The returned task objects include the task IDs and payloads. The same task IDs can then be used with the capability-style task mutation endpoints (`/tasks/:id/claim`, `/tasks/:id/result`, `/tasks/:id/complete`, `/tasks/:id/fail`) to claim, complete, or fail tasks assigned to a different agent. Because ordinary authenticated agents can discover agent names through `GET /api/agenticmail/accounts/directory`, the task ID effectively stops being a secret capability. This turns the intended capability model into a cross-agent authorization bypass. Version 0.9.64 contains a fix.

The record classifies CVE-2026-57494 under weakness classes [CWE-639](https://intel.threadlinqs.com/cwe/CWE-639), [CWE-862](https://intel.threadlinqs.com/cwe/CWE-862). 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 77 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 7.1 — High (derived from score) (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 12.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-20, last modified 2026-07-21

## Is CVE-2026-57494 being exploited?

It currently carries a trending score of 33 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **agenticmail**: @agenticmail/api

Affected software packages:

- `npm:@agenticmail/api` — patched in 0.9.64

## How to fix CVE-2026-57494

Fixed versions are recorded for 1 package: npm:@agenticmail/api 0.9.64. No vendor patch reference has been recorded for CVE-2026-57494 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-2026-57494

No threat campaign in the Threadlinqs corpus currently references CVE-2026-57494, 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, GitHub Security Advisories. Last verified by Threadlinqs on 2026-07-21. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/agenticmail/agenticmail/security/advisories/GHSA-hjwc-26pj-v3pm)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-57494
Full detection coverage and IOCs for threats exploiting CVE-2026-57494 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp