CVE-2026-106460Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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 normalization. The affected paths include a selected profile email marked verified: false, a matching raw provider email marked email_verified: false, and an email obtained only from an ID token marked email_verified: false. Exploitation requires an admitted identity-provider user who can supply or change an unverified email and a deployment that uses the selected profile email to resolve catalog identities. The verification metadata must apply to the selected email; an absent email_verified claim alone is not affected. In an affected configuration, the user may assume another catalog identity and obtain its associated access and permissions. This issue is fixed in versions 0.6.15 and 0.7.5.
- CVSS
- 6.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Undergoing Analysis
- Record last updated
- Oct 9, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
backstage backstage backstage:backstage (from the name) | from 1.18.0, < 1.49.7; from 1.50.0-next.0, < 1.54.7 | CNA record |
@backstage plugin-auth-node backstage:plugin_auth_node (from the name) | from 0.3.0, < 0.6.15; from 0.7.0, < 0.7.5 | CNA record |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-xm5q-p7w3-x6cpx-refsource-confirm
- https://github.com/backstage/backstage/commit/507e65ab9160aae6b602513dbfaebdd6be0ca8bbx-refsource-misc
- https://github.com/backstage/backstage/commit/f0a43dacd1b501064da042b43eab9c1e06371d38x-refsource-misc
- https://github.com/backstage/backstage/commit/fc5e30aba8ea7282ed3658c3b985cec71051cf9dx-refsource-misc
- https://github.com/backstage/backstage/releases/tag/v1.49.7x-refsource-misc
- https://github.com/backstage/backstage/releases/tag/v1.54.7x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.