fast-uri vulnerable to mailto header injection via percent-encoded field-name desynchronization

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

CVE-2026-86818 · Microsoft / collected KEV context

EUVD-2026-78403

GHSA-jvvf-x445-j334

cve-program · CVE-2026-86818

• https://github.com/fastify/fast-uri/security/advisories/GHSA-jvvf-x445-j334
• https://cna.openjsf.org/security-advisories.html

euvd · EUVD-2026-78403

• https://github.com/fastify/fast-uri/security/advisories/GHSA-jvvf-x445-j334
• https://cna.openjsf.org/security-advisories.html

nvd · CVE-2026-86818

• https://cna.openjsf.org/security-advisories.html
• https://github.com/fastify/fast-uri/security/advisories/GHSA-jvvf-x445-j334

osv · GHSA-jvvf-x445-j334

• https://github.com/fastify/fast-uri/security/advisories/GHSA-jvvf-x445-j334
• https://nvd.nist.gov/vuln/detail/CVE-2026-86818
• https://github.com/fastify/fast-uri/commit/f40a88f33e684a46faec3f5b820bcbb1e85add64
• https://cna.openjsf.org/security-advisories.html
• https://github.com/fastify/fast-uri
• https://github.com/fastify/fast-uri/releases/tag/v4.1.5

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