CVE-2026-18504
CVE-2026-18504: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium5.4
Medium [CVE-2026-18504] Schema validation bypass via root primitive coercion mismatch
CVE-2026-18504Source published Source updated
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. 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. A flaw was found in fastify. This occurs because the validation process may coerce a JSON string into an expected type, but the original unvalidated string is then passed to the application logic. Red Hat severity: Moderate — CVSS 5.4…
- Affected products in this advisory
- Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift Dev Spaces
- Source-reported affected versions
- < 5.12.1
- Source-reported fixed versions
- 5.12.1
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
Android app · Google Play
Monitor future Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.