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CVE-2026-45405

Dokku vulnerability

9.0 CRITICALEPSS 0.46%
  1. Published26 Jun 2026

Description

Dokku is a docker-powered PaaS. Prior to 0.38.2, the git:from-archive and certs:add commands extract user-supplied tar/zip archives into temporary directories without sanitizing member paths or preventing symlink traversal. GNU tar creates symlinks during extraction and follows them for subsequent entries, allowing an attacker to write arbitrary files anywhere writable by the dokku user — including overwriting ~/.ssh/authorized_keys to gain unrestricted shell access. 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-2026-45405 being actively exploited?

CVE-2026-45405 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.46%.

How severe is CVE-2026-45405?

CVE-2026-45405 has a CVSS 3.1 base score of 9.0, rated critical. EPSS estimates a 0.46% probability of exploitation.

Which products are affected by CVE-2026-45405?

Affected products include Dokku.

How do I fix CVE-2026-45405?

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-2026-45405 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.