CVE-2026-27882 | Coolify is an open-source and self-hostable tool for managin… | CVSS 4.8 MEDIUM

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.

Metadata

CVE ID: CVE-2026-27882
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-02-24 15:19 UTC
Published: 2026-06-30 14:26 UTC
Last updated: 2026-06-30 15:58 UTC
Primary CWE: CWE-208
CWE-208: Observable Timing Discrepancy
Vendor / Product: coollabsio / coolify
Sources: cve.org · NVD

Severity & Metrics

4.8 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
coollabsio	coolify	—	< 4.0.0-beta.461

Weakness (CWE)

CWE	Source	Description
CWE-208	cna	CWE-208: Observable Timing Discrepancy

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.8	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References (1)

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