CVE-2026-75931Published
fast-uri vulnerable to host confusion via skipped IDN canonicalization on scheme-relative references
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-75931 · Microsoft / collected KEV context
cve-program · CVE-2026-75931
- https://github.com/fastify/fast-uri/security/advisories/GHSA-5jgf-p345-68v8
- https://cna.openjsf.org/security-advisories.html
euvd · EUVD-2026-64758
- https://github.com/fastify/fast-uri/security/advisories/GHSA-5jgf-p345-68v8
- https://cna.openjsf.org/security-advisories.html
nvd · CVE-2026-75931
- https://cna.openjsf.org/security-advisories.html
- https://github.com/fastify/fast-uri/security/advisories/GHSA-5jgf-p345-68v8
osv · GHSA-5jgf-p345-68v8
- https://github.com/fastify/fast-uri/security/advisories/GHSA-5jgf-p345-68v8
- https://nvd.nist.gov/vuln/detail/CVE-2026-75931
- https://github.com/fastify/fast-uri/commit/0256bc8d1f28b5d0ac657faf67e2411a189dfcb5
- https://github.com/fastify/fast-uri/commit/444ecdad447db2cc23c4d422acc6f0daa6fa8eef
- https://github.com/fastify/fast-uri/commit/4e4ebd8b245f6ca16e448203559eea3e545453a3
- https://cna.openjsf.org/security-advisories.html
- https://github.com/fastify/fast-uri
- https://github.com/fastify/fast-uri/releases/tag/v2.4.5
- https://github.com/fastify/fast-uri/releases/tag/v3.1.6
- https://github.com/fastify/fast-uri/releases/tag/v4.1.3
Related operational evidence
Explicit CVE identifiers- fast-uri is a URI parser for Node.js. It canonicalizes a host to its ASCII form only when the input carries an explicit scheme, so a scheme-relative reference such as a host preceded by two slashes is returned with its host verbatim and no … · Advisory content revised · 9 Nov 2026
- fast-uri is a URI parser for Node.js. It canonicalizes a host to its ASCII form only when the input carries an explicit scheme, so a scheme-relative reference such as a host preceded by two slashes is returned with its host verbatim and no … · Advisory content revised · 7 Nov 2026
- fast-uri is a URI parser for Node.js. It canonicalizes a host to its ASCII form only when the input carries an explicit scheme, so a scheme-relative reference such as a host preceded by two slashes is returned with its host verbatim and no … · Advisory content revised · 1 Nov 2026