Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization

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

CVE-2026-106460 · Microsoft / collected KEV context

EUVD-2026-93995

GHSA-xm5q-p7w3-x6cp

cve-program · CVE-2026-106460

• https://github.com/backstage/backstage/security/advisories/GHSA-xm5q-p7w3-x6cp
• https://github.com/backstage/backstage/commit/507e65ab9160aae6b602513dbfaebdd6be0ca8bb
• https://github.com/backstage/backstage/commit/f0a43dacd1b501064da042b43eab9c1e06371d38
• https://github.com/backstage/backstage/commit/fc5e30aba8ea7282ed3658c3b985cec71051cf9d
• https://github.com/backstage/backstage/releases/tag/v1.49.7
• https://github.com/backstage/backstage/releases/tag/v1.54.7

euvd · EUVD-2026-93995

• https://github.com/backstage/backstage/security/advisories/GHSA-xm5q-p7w3-x6cp
• https://github.com/backstage/backstage/commit/507e65ab9160aae6b602513dbfaebdd6be0ca8bb
• https://github.com/backstage/backstage/commit/f0a43dacd1b501064da042b43eab9c1e06371d38
• https://github.com/backstage/backstage/commit/fc5e30aba8ea7282ed3658c3b985cec71051cf9d
• https://github.com/backstage/backstage/releases/tag/v1.49.7
• https://github.com/backstage/backstage/releases/tag/v1.54.7

nvd · CVE-2026-106460

• https://github.com/backstage/backstage/commit/507e65ab9160aae6b602513dbfaebdd6be0ca8bb
• https://github.com/backstage/backstage/commit/f0a43dacd1b501064da042b43eab9c1e06371d38
• https://github.com/backstage/backstage/commit/fc5e30aba8ea7282ed3658c3b985cec71051cf9d
• https://github.com/backstage/backstage/releases/tag/v1.49.7
• https://github.com/backstage/backstage/releases/tag/v1.54.7
• https://github.com/backstage/backstage/security/advisories/GHSA-xm5q-p7w3-x6cp

osv · GHSA-xm5q-p7w3-x6cp

• https://github.com/backstage/backstage/security/advisories/GHSA-xm5q-p7w3-x6cp
• https://nvd.nist.gov/vuln/detail/CVE-2026-106460
• https://github.com/backstage/backstage/commit/507e65ab9160aae6b602513dbfaebdd6be0ca8bb
• https://github.com/backstage/backstage/commit/f0a43dacd1b501064da042b43eab9c1e06371d38
• https://github.com/backstage/backstage/commit/fc5e30aba8ea7282ed3658c3b985cec71051cf9d
• https://github.com/backstage/backstage
• https://github.com/backstage/backstage/releases/tag/v1.49.7
• https://github.com/backstage/backstage/releases/tag/v1.54.7

• Backstage is an open framework for building developer portals. From 0.3.0 until 0.6.15 and 0.7.5, the @backstage/plugin-auth-node package did not consistently honor explicit negative email verification during shared OAuth profile normalizat… · Advisory content revised · 29 Oct 2026