CVE-2026-23480 is a high-severity privilege escalation vulnerability affecting Blinko AI-powered card note-taking software prior to version 1.8.4. This flaw, rated 8.8 CVSS (High), stems from missing authentication and authorization checks in the upsertUser endpoint. Any authenticated user can exploit this to modify other users' passwords, directly escalate to superadmin, and achieve complete account takeover, leading to high impact on confidentiality, integrity, and availability. While the vulnerability is critical, there is currently no evidence of active exploitation, public exploit code, or significant community discussion. Organizations using Blinko should upgrade to version 1.8.4 immediately to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.8.4CPE matchmatch criteria | cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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