What is CVE-2025-26788?

CVE-2025-26788 is a high-severity vulnerability in Strongkey Fido Server, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.4/10. Published 2025-02-14.

How severe is CVE-2025-26788?

High severity. CVSS v3 base score is 8.4 out of 10.

Is CVE-2025-26788 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Strongkey Fido Server

CVE-2025-26788

StrongKey FIDO Server before 4.15.1 treats a non-discoverable (namedcredential) flow as a discoverable transaction.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.004 (33.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L.

Affected products

Strongkey Fido Server — versions 4.10.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-26788?: CVE-2025-26788 is a high-severity vulnerability in Strongkey Fido Server, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.4/10. Published 2025-02-14.
How severe is CVE-2025-26788?: High severity. CVSS v3 base score is 8.4 out of 10.
Is CVE-2025-26788 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.