@fastify/express vulnerable to middleware authentication bypass via URL normalization gaps (duplicate slashes and semicolons)

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

CVE-2026-33808 · Microsoft / collected KEV context

EUVD-2026-22881

GHSA-6hw5-45gm-fj88

cve-program · CVE-2026-33808

• https://github.com/fastify/fastify-express/security/advisories/GHSA-6hw5-45gm-fj88
• https://cna.openjsf.org/security-advisories.html

euvd · EUVD-2026-22881

• https://github.com/fastify/fastify-express/security/advisories/GHSA-6hw5-45gm-fj88
• https://cna.openjsf.org/security-advisories.html

nvd · CVE-2026-33808

• https://cna.openjsf.org/security-advisories.html
• https://github.com/fastify/fastify-express/security/advisories/GHSA-6hw5-45gm-fj88

osv · GHSA-6hw5-45gm-fj88

• https://github.com/fastify/fastify-express/security/advisories/GHSA-6hw5-45gm-fj88
• https://nvd.nist.gov/vuln/detail/CVE-2026-33808
• https://cna.openjsf.org/security-advisories.html
• https://github.com/fastify/fastify-express

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