CVE-2026-27955Public exploitNetwork attack vector

Host command execution via unescaped single-quote breakout

Published Jun 30, 2026 · Updated Jun 30, 2026

OS command injection in Coolify before 4.0.0-beta.464 allows remote authenticated users to execute commands on managed server hosts. executeInDocker() encloses custom Docker Compose build and start commands in a single-quoted bash -c argument without escaping embedded single quotes. Write-scoped API access and application-update authorization are required; injected commands escape the builder container and run on the managed host.

CVSS severity6.6
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Coolify before 4.0.0-beta.464 allows remote authenticated users to execute commands on managed server hosts. executeInDocker() encloses custom Docker Compose build and start commands in a single-quoted bash -c argument without escaping embedded single quotes. Write-scoped API access and application-update authorization are required; injected commands escape the builder container and run on the managed host.

The record

CVE
CVE-2026-27955
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
coolLabs
Product
Coolify
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.0.0-beta.464

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

coolLabs · Coolifyversion=< 4.0.0-beta.464

Published CVSS scores

6.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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