Information disclosure in Coollabsio Coolify
CVE-2026-121587
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.
Vulnerability class: Information Disclosure
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/coollabsio/coolify/pull/10361 (issue-tracking, patch)
- github.com/coollabsio/coolify/commit/c1518ba1c0be36da42b6cef06df4b042f5733b01 (patch)
- github.com/coollabsio/coolify/commit/809d9b21fa9609de2ce9b49bb838c079598da876 (patch)
- github.com/coollabsio/coolify/releases/tag/v4.1.1 (release-notes)
- github.com/coollabsio/coolify/blob/v4.1.0/app/Http/Controllers/Webhook/Github.p… (technical-description)
- github.com/coollabsio/coolify (product)
- www.vulncheck.com/advisories/coolify-before-4.1.1-application-name-enumeration-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121587?
- CVE-2026-121587 is a medium-severity vulnerability in Coollabsio Coolify, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-11-03.
- How severe is CVE-2026-121587?
- Medium severity. CVSS v3 base score is 5.3 out of 10.