CVE-2026-27955

MEDIUMPre-NVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 87% 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
6.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.6Exploit: 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.464, the executeInDocker() helper wraps commands in bash -c '{$command}' without escaping single quotes. User-controlled docker_compose_custom_build_command and docker_compose_custom_start_command fields are interpolated directly, allowing a single quote to break out of the bash -c argument and execute commands on the managed server host (outside the intended Docker container context). This vulnerability is fixed in 4.0.0-beta.464.

CVSS v3
6.6
EG Score
6.6(medium)
EPSS
12.7%
KEV
Not listed

Published

June 30, 2026

Last Modified

June 30, 2026

Advisory Details (1)

Auto-updated Jun 30, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Command Injection via Single-Quote Breakout in `executeInDocker()` · Advisory · coollabsio/coolify · GitHub

https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 39× 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 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 06:31 UTCEG score recompute
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-14 08:39 UTCEG score recompute
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 10:46 UTCEG score recompute
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-12 12:54 UTCEG score recompute
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-11 15:02 UTCEG score recompute
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-10 17:09 UTCEG score recompute
  16. 2026-07-09 19:16 UTCEG score recompute
  17. 2026-07-09 19:10 UTCEPSS rescore
  18. 2026-07-08 21:23 UTCEG score recompute
  19. 2026-07-08 15:15 UTCEPSS rescore
  20. 2026-07-07 23:32 UTCEG score recompute
  21. 2026-07-07 13:46 UTCEPSS rescore
  22. 2026-07-07 01:40 UTCEG score recompute
  23. 2026-07-06 16:27 UTCEPSS rescore
  24. 2026-07-06 16:27 UTCEPSS rescore
  25. 2026-07-06 03:48 UTCEG score recompute
Show 14 more
  1. 2026-07-06 02:23 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 05:56 UTCEG score recompute
  4. 2026-07-05 02:30 UTCEPSS rescore
  5. 2026-07-04 08:03 UTCEG score recompute
  6. 2026-07-04 06:31 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-03 10:10 UTCEG score recompute
  9. 2026-07-02 12:17 UTCEG score recompute
  10. 2026-07-01 15:06 UTCEPSS rescore
  11. 2026-07-01 15:06 UTCEPSS rescore
  12. 2026-07-01 14:25 UTCEG score recompute
  13. 2026-06-30 16:33 UTCEG score recompute
  14. 2026-06-30 16:32 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27955?
CVE-2026-27955 is a medium vulnerability published on June 30, 2026. Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.464, the executeInDocker() helper wraps commands in bash -c '{$command}' without escaping single quotes. User-controlled dockercomposecustombuildcommand and…
When was CVE-2026-27955 disclosed?
CVE-2026-27955 was first published in the National Vulnerability Database on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27955 actively exploited?
CVE-2026-27955 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-27955?
CVE-2026-27955 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2026-27955?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27955, 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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