CVE-2026-42148
LOW 3.8 PoC AVAILABLECoolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, the buildHelperImage method in app/Livewire/Settings/Index.php constructs a Docker build command using the dev_helper_version field without shell escaping, allowing an attacker who can set the helper version and trigger the helper image build in a development environment to execute arbitrary commands on the server. This issue is fixed in version 4.0.0-beta.474.
Public exploit or PoC code exists. Modeled probability is still low, but the barrier to attack is reduced — watch closely.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 2nd percentile
Impact if exploited
3.8CVSS 3.1 · LOW
- ConfidentialityLow
- IntegrityLow
- AvailabilityLow
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires an admin / high-privilege account
- ⚠User interaction: A user must take an action (click / open a file)
- ⚠Complexity: Needs a race window or specific setup
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- reference https://github.com/coollabsio/coolify/security/advisories/GHSA-x9qh-w4c4-54f9
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-42148/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-42148/poc.json
Weakness (CWE)
- CWE-78: : Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
All CVSS metrics
- LOW 3.8 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L - LOW 3.8 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L