Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel

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

CVE-2026-40263 · Microsoft / collected KEV context

EUVD-2026-23334

GHSA-w6m9-39cv-2fwp

GO-2026-5696

cve-program · CVE-2026-40263

• https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp
• https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034

euvd · EUVD-2026-23334

• https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp
• https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034

nvd · CVE-2026-40263

• https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034
• https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp

osv · GHSA-w6m9-39cv-2fwp

• https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp
• https://nvd.nist.gov/vuln/detail/CVE-2026-40263
• https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034
• https://github.com/enchant97/note-mark

osv · GO-2026-5696

• https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp
• https://nvd.nist.gov/vuln/detail/CVE-2026-40263
• https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034

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