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CVE-2026-45406

Dokku code injection

9.0 CRITICALEPSS 0.53%
  1. Published26 Jun 2026

Description

Dokku is a docker-powered PaaS. Prior to 0.38.2, the openresty-vhosts plugin copies files from an app's openresty/http-includes/ git repository directory to the host and then interpolates their filenames, unescaped, into a single-quoted shell string that is later parsed by eval. A filename containing a single quote breaks the quoting and allows command substitution to execute arbitrary commands on the host as the dokku user during the app's next deploy. This vulnerability is fixed in 0.38.2.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected products

Dokku< 0.38.2

Remediation

Fixed in
Dokku≥ 0.38.2

References

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Frequently asked

Is CVE-2026-45406 being actively exploited?

CVE-2026-45406 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.53%.

How severe is CVE-2026-45406?

CVE-2026-45406 has a CVSS 3.1 base score of 9.0, rated critical. EPSS estimates a 0.53% probability of exploitation.

Which products are affected by CVE-2026-45406?

Affected products include Dokku.

How do I fix CVE-2026-45406?

Upgrade affected software to a fixed version, for example Dokku 0.38.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-45406 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.