CVE-2026-45405 | Dokku is a docker-powered PaaS. Prior to 0.38.2, the git:fro… | CVSS 9.0 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.

Metadata

CVE ID: CVE-2026-45405
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-12 01:48 UTC
Published: 2026-06-26 16:23 UTC
Last updated: 2026-06-26 16:50 UTC
Primary CWE: CWE-59
CWE-59: Improper Link Resolution Before File Access ('Link F…
Vendor / Product: dokku / dokku
Sources: cve.org · NVD

Severity & Metrics

9.0 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
dokku	dokku	—	< 0.38.2

Weakness (CWE)

CWE	Source	Description
CWE-59	cna	CWE-59: Improper Link Resolution Before File Access ('Link Following')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.0	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References (2)

https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg
https://github.com/dokku/dokku/pull/8591 https://github.com/dokku/dokku/pull/8591