CVE-2026-45405
Critical
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.
SeverityCritical
CVSS9.0
Exploit probability—
ProductDokku
PublishedJun 26, 2026
First seenJun 26, 2026
Weakness typeCWE-59Improper link resolution
How to fix
Update
- dokku dokku0.38.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dokku dokku | v < 0.38.2 | 0.38.2 |
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