How severe is CVE-2026-23480?

CVE-2026-23480 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-23480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23480?

CVE-2026-23480 affects Blinko. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23480?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-23480 have an EU (EUVD) identifier?

Yes. CVE-2026-23480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14529.

When was CVE-2026-23480 published?

CVE-2026-23480 was published on 2026-03-23 and last updated on 2026-06-17.

CVE-2026-23480

CVE-2026-23480 is a high-severity vulnerability in Blinko with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 5.3
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14529
Weakness: CWE-288
Affected product: Blinko
Published: 2026-03-23
Last modified: 2026-06-17

Description

Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, there is a privilege escalation vulnerability. The upsertUser endpoint has 3 issues: it is missing superAdminAuthMiddleware, any logged-in user can call it; the originalPassword is an optional parameter and if not provided password verification is skipped; there is no check for input.id === ctx.id (ownership verification). This could result in any authenticated user modifying other users' passwords, direct escalation to superadmin, and complete account takeover. This issue has been patched in version 1.8.4.

Frequently asked questions

What is CVE-2026-23480?: Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, there is a privilege escalation vulnerability. The upsertUser endpoint has 3 issues: it is missing superAdminAuthMiddleware, any logged-in user can call it; the originalPassword is an optional parameter and if not provided password verification is skipped; there is no check for input.id === ctx.id (ownership verification). This could result in any authenticated user modifying other users' passwords, direct escalation to superadmin, and complete account takeover. This issue has been patched in version 1.8.4.
How severe is CVE-2026-23480?: CVE-2026-23480 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-23480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23480?: CVE-2026-23480 affects Blinko. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23480?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-23480 have an EU (EUVD) identifier?: Yes. CVE-2026-23480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14529.
When was CVE-2026-23480 published?: CVE-2026-23480 was published on 2026-03-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:*

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