CVE-2026-25555
Critical
Description
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 can exploit the middleware's comparison of the supplied header against an empty AdminApiKey default string to access the admin console and all API endpoints without valid credentials.
SeverityCritical
CVSS9.8
Exploit probability—
ProductOpenbullet2
PublishedJun 8, 2026
First seenJun 8, 2026
Weakness typeCWE-305CWE-305
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openbullet openbullet2 | v ≤ 0.3.2 | — |
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