Is CVE-2026-121587 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-121587?

CVE-2026-121587 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-121587

Description

Coolify before 4.1.1 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate application names across all teams via manual GitHub, GitLab, Bitbucket and Gitea webhooks. Attackers can send a repository name of % or empty with a common branch like main, exploiting unescaped LIKE wildcards to receive every matching application name before signature verification.