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Coolify CVE-2026-27881

| EUVDEUVD-2026-40329 MEDIUM
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-06-30 GitHub_M
5.0
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
5.0 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
vuln.today AI
3.5 LOW

AC:H assigned because a valid cross-team UUID must be independently obtained; PR:L for required API authentication; S:C and C:L reflect read-only cross-tenant deployment data disclosure.

3.1 AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Patch available
Jun 30, 2026 - 16:01 EUVD
Analysis Generated
Jun 30, 2026 - 15:27 vuln.today

DescriptionCVE.org

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.464, GET /api/v1/deployments/{uuid} in DeployController.php retrieves deployment details without validating that the deployment belongs to the authenticated user's team. Any authenticated API user can read deployment records from other teams by providing a valid deployment UUID. This vulnerability is fixed in 4.0.0-beta.464.

AnalysisAI

{uuid}. The DeployController.php endpoint performs no team-ownership validation against the requesting user's session, making this a textbook CWE-639 Insecure Direct Object Reference (IDOR) across tenant boundaries. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privilege Coolify API token
Exploit
Discover target team deployment UUID via reconnaissance
Execution
Send GET /api/v1/deployments/{uuid} request
Impact
Receive cross-team deployment metadata

Vulnerability AssessmentAI

Exploitation The attacker must hold a valid Coolify API token with at least low-privilege access (PR:L) - unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The NVD-assigned CVSS 5.0 (Medium) with vector AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N is broadly appropriate: network-accessible, low complexity, requires only a low-privilege token, no user interaction needed, and results in limited read-only confidentiality impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated attacker with a low-privilege Coolify API token on a shared instance learns a deployment UUID belonging to another team - for example, through a shared CI log, Slack message, or social engineering - and issues a single `GET /api/v1/deployments/{UUID}` HTTP request. The API returns that team's deployment record, including application and infrastructure metadata, without checking team membership. …
Remediation Upgrade Coolify to version 4.0.0-beta.464 or later, which introduces team-ownership validation on the `GET /api/v1/deployments/{uuid}` endpoint in DeployController.php; this is the only confirmed fix per the GitHub Security Advisory GHSA-5p5w-h58c-2h5m (https://github.com/coollabsio/coolify/security/advisories/GHSA-5p5w-h58c-2h5m). … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-27881 vulnerability details – vuln.today

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