CVE-2026-27882 - Vulnerability Details - OpenCVE

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.461, the GitLab webhook endpoint uses a non-constant-time string comparison operator (!==) to validate the webhook secret token. This implementation is vulnerable to timing attacks, which could allow an attacker to gradually discover the secret token by measuring response time differences. This vulnerability is fixed in 4.0.0-beta.461.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://github.com/coollabsio/coolify/security/advisories/GHSA-x525-46rq-mr8c

History

Tue, 30 Jun 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 30 Jun 2026 15:00:00 +0000

Type	Values Removed	Values Added
Description		Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.461, the GitLab webhook endpoint uses a non-constant-time string comparison operator (!==) to validate the webhook secret token. This implementation is vulnerable to timing attacks, which could allow an attacker to gradually discover the secret token by measuring response time differences. This vulnerability is fixed in 4.0.0-beta.461.
Title		Coolify: Timing Attack in GitLab Webhook Token Validation
Weaknesses		CWE-208
References		https://github.com/coollabsio/coolify/security/advisories/GHSA-x525-46rq-mr8c
Metrics		cvssV3_1 `{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}`

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-30T14:26:44.422Z

Updated: 2026-06-30T15:58:02.524Z

Reserved: 2026-02-24T15:19:29.715Z

Link: CVE-2026-27882

Vulnrichment

Updated: 2026-06-30T15:49:11.759Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-06-30T16:30:16Z

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