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Vulnerability record · CVE-2026-45405 · published 26 June 2026

CVE-2026-45405: Dokku link following vulnerability

Dokku · Dokku

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.

8.8 CVSS 3.1 High EPSS 0.46% · top 62.8% CWE-59 · Link following
8.8CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
26 Jun 2026Last modified by NVD

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/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/dokku/dokku/pull/8591 Issue TrackingPatch
https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-45405), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.