# CVE-2026-121587: Coolify before 4.1.1 Application Name Enumeration via Manual Webhook Endpoints

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/coollabsio/coolify/pull/10361
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/coollabsio/coolify/commit/c1518ba1c0be36da42b6cef06df4b042f5733b01
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/coollabsio/coolify/commit/809d9b21fa9609de2ce9b49bb838c079598da876

## Affected products and versions

- coollabsio / coolify (coollabsio/coolify): ≥ 0; < 4.1.1 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N; source: CNA: VulnCheck

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-200

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/coollabsio/coolify/pull/10361 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/coollabsio/coolify/commit/c1518ba1c0be36da42b6cef06df4b042f5733b01 (CNA: VulnCheck; patch)

- https://github.com/coollabsio/coolify/commit/809d9b21fa9609de2ce9b49bb838c079598da876 (CNA: VulnCheck; patch)

- https://github.com/coollabsio/coolify/releases/tag/v4.1.1 (CNA: VulnCheck; release-notes)

- https://github.com/coollabsio/coolify/blob/v4.1.0/app/Http/Controllers/Webhook/Github.php#L69 (CNA: VulnCheck; technical-description)

- https://github.com/coollabsio/coolify (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/coolify-before-4.1.1-application-name-enumeration-via-manual-webhook-endpoints (CNA: VulnCheck; third-party-advisory)

- https://github.com/coollabsio/coolify (disclosure@vulncheck.com)

- https://github.com/coollabsio/coolify/blob/v4.1.0/app/Http/Controllers/Webhook/Github.php#L69 (disclosure@vulncheck.com)

- https://github.com/coollabsio/coolify/commit/809d9b21fa9609de2ce9b49bb838c079598da876 (disclosure@vulncheck.com)

- https://github.com/coollabsio/coolify/commit/c1518ba1c0be36da42b6cef06df4b042f5733b01 (disclosure@vulncheck.com)

- https://github.com/coollabsio/coolify/pull/10361 (disclosure@vulncheck.com)

- https://github.com/coollabsio/coolify/releases/tag/v4.1.1 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/coolify-before-4.1.1-application-name-enumeration-via-manual-webhook-endpoints (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-121587; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121587; retrieved 2026-11-03; source updated 2026-11-03

Revision: 9d5a83fbe8ae52da05fdb7c1c9eefd92920c5e077e4f3ad107cbfa2e4a3a62bb

Canonical: https://y2.dev/cve/CVE-2026-121587

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