What is CVE-2026-25555?

CVE-2026-25555 is a critical-severity vulnerability, classified under Authentication Bypass by Primary Weakness. CVSS score: 9.8/10. Published 2026-06-08.

How severe is CVE-2026-25555?

Critical severity. CVSS v3 base score is 9.8 out of 10.

CVE-2026-25555

CVE-2026-25555

OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers c…

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-305 — Authentication Bypass by Primary Weakness

References

disclosure@vulncheck.com
disclosure@vulncheck.com

Frequently asked questions

What is CVE-2026-25555?: CVE-2026-25555 is a critical-severity vulnerability, classified under Authentication Bypass by Primary Weakness. CVSS score: 9.8/10. Published 2026-06-08.
How severe is CVE-2026-25555?: Critical severity. CVSS v3 base score is 9.8 out of 10.