CVE-2026-34158

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
28.5%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 7, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Command injection via single-quote breakout in Docker Compose custom commands · Advisory · coollabsio/coolify · GitHub

https://github.com/coollabsio/coolify/security/advisories/GHSA-j6j2-frv3-g6f7

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 22:46 UTCEG score recompute
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 11:07 UTCEG score recompute
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-14 23:28 UTCEG score recompute
  7. 2026-07-14 11:45 UTCEG score recompute
  8. 2026-07-14 00:06 UTCEG score recompute
  9. 2026-07-13 22:30 UTCEPSS rescore
  10. 2026-07-13 12:27 UTCEG score recompute
  11. 2026-07-13 06:13 UTCEPSS rescore
  12. 2026-07-13 06:13 UTCEPSS rescore
  13. 2026-07-13 00:48 UTCEG score recompute
  14. 2026-07-12 13:08 UTCEG score recompute
  15. 2026-07-12 05:46 UTCEPSS rescore
  16. 2026-07-12 01:29 UTCEG score recompute
  17. 2026-07-11 13:50 UTCEG score recompute
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-11 02:12 UTCEG score recompute
  20. 2026-07-10 14:32 UTCEG score recompute
  21. 2026-07-10 02:52 UTCEG score recompute
  22. 2026-07-09 19:10 UTCEPSS rescore
  23. 2026-07-09 15:13 UTCEG score recompute
  24. 2026-07-09 03:33 UTCEG score recompute
  25. 2026-07-08 15:55 UTCEG score recompute
Show 6 more
  1. 2026-07-08 15:15 UTCEPSS rescore
  2. 2026-07-08 04:16 UTCEG score recompute
  3. 2026-07-07 16:31 UTCEG score recompute
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-07 04:51 UTCEG score recompute
  6. 2026-07-07 04:51 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-34158?
CVE-2026-34158 is a high vulnerability published on July 7, 2026. 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…
When was CVE-2026-34158 disclosed?
CVE-2026-34158 was first published in the National Vulnerability Database on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34158 actively exploited?
CVE-2026-34158 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-34158?
CVE-2026-34158 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-34158?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34158, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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