NVD / CVE Program· CNA VulnCheck

CVE-2026-84694: Coolify before 4.2.0 Remote Code Execution via Environment Variable Key

Noroxi assessment

Priority: Monitor (action score 34/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.84% (FIRST EPSS); higher than 58% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: coollabsio coolify 4.2.0.

Low priority for now. Upgrade to coollabsio coolify 4.2.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Coolify before 4.2.0 fails to properly escape environment variable key names in Docker commands executed over SSH on managed servers. Authenticated attackers can inject shell metacharacters into environment variable keys to execute arbitrary commands on the server host outside containers.

HighCVSS 8.7 · v4.0—No exploit Fix available

EUVD-2026-69785

Published: Sep 1, 2026
Updated: Sep 10, 2026
EPSS: 0.8% · 58th percentile
CWE: CWE-78

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 34 / 40 · 8.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.8%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · VulnCheck: 8.7; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

coollabsio coolify
- 4.2.0not affected
- before 4.2.0affected · semver

Same product

coollabsio: all records

Other highest-scoring records for the same primary product.

CVE-2026-34038Coolify authenticated remote command injection leading to RCE and secret exfiltration
40Plan
CVE-2026-34048Coolify: Missing authorization on terminal websocket bootstrap routes allows low-privileged members to execute commands on team servers
39Monitor
CVE-2026-34047Coolify: WebSocket Endpoint Access Control Flaw Leading to Remote Code Execution
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-59734Jul 9, 2026 · Coolify: OS Command Injection in Health Check Configuration Allows Remote Code Execution
35Monitor
← EarlierCVE-2026-15507Jul 12, 2026 · coollabsio Coolify Policy Policies authorization
8Monitor
Later →CVE-2026-86117Sep 5, 2026 · Coolify through 4.3.17 OAuth Account Takeover via Unverified Email Matching
36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
coollabsio coolify	4.2.0	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

coollabsio/coolifycommit b50839d

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Jaime Ramírezfinder

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-3403857 days apartCoolify authenticated remote command injection leading to RCE and secret exfiltration
40Plan
CVE-2026-3459957 days apartCoolify: Authenticated Remote Code Execution in GetLogs Livewire Component
36Monitor
CVE-2026-5973454 days apartCoolify: OS Command Injection in Health Check Configuration Allows Remote Code Execution
35Monitor
CVE-2026-3416856 days apartCoolify: Command injection via unsanitized persistent storage name in docker volume commands
35Monitor
CVE-2026-4214356 days apartCoolify: OS Command Injection via Persistent Volume Names - Root RCE on Managed Servers
35Monitor
CVE-2026-3415256 days apartCoolify: Command Injection via Newline in Pre/Post Deployment Commands (Heredoc Transport)
35Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-861174 days apartCoolify through 4.3.17 OAuth Account Takeover via Unverified Email Matching
36Monitor
CVE-2026-10074626 days apartcoollabsio Coolify GitHub App Setup redirect missing authentication
22Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: X

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const host = req.body.host;
2exec("ping -c 1 " + host, onResult);

Fixed

1const host = req.body.host;
2if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);
3execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

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Change log

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

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References

github.com/coollabsio/coolify

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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