@fastify/express vulnerable to middleware path doubling causing authentication bypass in child plugin scopes

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-33807 · Microsoft / collected KEV context

EUVD-2026-22880

GHSA-hrwm-hgmj-7p9c

cve-program · CVE-2026-33807

• https://github.com/fastify/fastify-express/security/advisories/GHSA-hrwm-hgmj-7p9c
• https://cna.openjsf.org/security-advisories.html

euvd · EUVD-2026-22880

• https://github.com/fastify/fastify-express/security/advisories/GHSA-hrwm-hgmj-7p9c
• https://cna.openjsf.org/security-advisories.html

nvd · CVE-2026-33807

• https://cna.openjsf.org/security-advisories.html
• https://github.com/fastify/fastify-express/security/advisories/GHSA-hrwm-hgmj-7p9c

osv · GHSA-hrwm-hgmj-7p9c

• https://github.com/fastify/fastify-express/security/advisories/GHSA-hrwm-hgmj-7p9c
• https://nvd.nist.gov/vuln/detail/CVE-2026-33807
• https://cna.openjsf.org/security-advisories.html
• https://github.com/fastify/fastify-express

No related operational record is retained in the current change model.