CVE-2026-18504 Affecting trigger-dev package, versions <4.5.11-r1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.31% (24th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-TRIGGERDEV-19524364
  • published4 Sept 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

CVE-2026-18504  (opens in a new tab)

How to fix?

Upgrade Minimos:latest trigger-dev to version 4.5.11-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream trigger-dev package and not the trigger-dev package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

fastify is a fast and low overhead web framework for Node.js. Versions of fastify before 5.12.1 are affected by a schema validation bypass when a request body schema targets a root primitive value. When the schema validates a top-level primitive such as an integer, Ajv can coerce a JSON string into the expected type during validation, but Fastify does not replace the root request body with the coerced value, so the route handler receives the original unvalidated string. As a result, a request that should have failed validation can reach application logic with a value that does not satisfy the schema, which can undermine integrity and access-control checks that rely on the validated type. Users should upgrade to fastify 5.12.1, which fixes the mismatch. No known workarounds are available.

CVSS Base Scores

version 3.1