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TI-2026-26458 Aliases CVE-2026-34158

Coolify: Command injection via single-quote breakout in Docker Compose custom commands

Priority HIGH 73CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00427 37th percentileScored 2026-11-07
Fix Fixed coolify (coollabsio): 4.0.0-beta.469

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
coollabsiocoolifybefore 4.0.0-beta.4694.0.0-beta.469Patch availableCNA
  • coolify Vendorcoollabsio Affected before 4.0.0-beta.469 Fixed in 4.0.0-beta.469 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:coollabs:coolify:*:*:*:*:*:*:*:*——coollabsio
  • cpe:2.3:a:coollabs:coolify:*:*:*:*:*:*:*:* Versions — — ·coollabsio

Remediation

  • Fix · CNA coolify (coollabsio) Fixed in 4.0.0-beta.469

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34158
  2. 2026-10-14 EPSS moved to the 50th–90th percentile
  3. 2026-10-26 EPSS moved to the below the 50th percentile

References

Other 1

  • TI-2025-40716 Coolify Vulnerable to Authenticated Remote Code Execution via Command Injection in File Storage Directory Mount Path CVSS 4.0CRITICAL 9.4
  • TI-2025-40715 Coolify Vulnerable to Authenticated Remote Code Execution via Command Injection in Dynamic Proxy Configuration Filename CVSS 4.0CRITICAL 9.4
  • TI-2025-40714 Coolify Vulnerable to Authenticated Remote Code Execution via Command Injection in PostgreSQL Init Script Filename CVSS 4.0CRITICAL 9.4
  • TI-2025-40713 Coolify Vulnerable to Authenticated Remote Code Execution via Command Injection in Database Import CVSS 4.0CRITICAL 9.4
  • TI-2025-40712 Coolify Vulnerable to Authenticated Remote Code Execution via Command Injection in Database Backup CVSS 3.1CRITICAL 10.0
  • TI-2025-16498 Coolify Vulnerable to Private Key Enumeration on Onboarding resulting in Remote Command Execution (RCE) CVSS 3.1CRITICAL 10.0
See all 78 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences