Is CVE-2026-34158 actively exploited?

No active exploitation of CVE-2026-34158 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34158 be exploited remotely?

Yes. CVE-2026-34158 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34158?

CVE-2026-34158 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2026-34158

HIGH

CVE-2026-34158

CWE-78Published: July 7, 2026· Updated: Jul 7, 2026

8.8

CVSS v3.1

EPSS:0.36%probability of exploitation in 30 daysPercentile:28.3th

Official Description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.469, the executeInDocker() helper wraps user-controlled commands in single quotes without escaping embedded single quotes. Attackers who can edit application settings can inject a single quote into docker_compose_custom_build_command or docker_compose_custom_start_command to break out of the quoted context and execute arbitrary commands on the managed server host during deployments, escaping the intended Docker container confinement. This issue is fixed in version 4.0.0-beta.469.

NVD Source

Technical Analysis

CVE-2026-34158 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.