CVE-2026-45405

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 v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/dokku/dokku/pull/8591	Issue Tracking Patch
https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dokku:dokku:*:*:*:*:-:*:*:*

History

26 Jun 2026, 18:56

Type	Values Removed	Values Added
CPE		cpe:2.3:a:dokku:dokku:::::-:::*
First Time		Dokku dokku Dokku
References	~~() https://github.com/dokku/dokku/pull/8591 -~~	() https://github.com/dokku/dokku/pull/8591 - Issue Tracking, Patch
References	~~() https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg -~~	() https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg - Vendor Advisory

26 Jun 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-26 17:16

Updated : 2026-06-26 18:56

NVD link : CVE-2026-45405

Mitre link : CVE-2026-45405

CVE.ORG link : CVE-2026-45405

JSON object : View

Products Affected

dokku

dokku

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

{"id": "CVE-2026-45405", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45405", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-26T16:49:35.215582Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 2.3}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "dokku", "product": "dokku", "versions": [{"status": "affected", "version": "< 0.38.2"}]}]}], "published": "2026-06-26T17:16:33.007", "references": [{"url": "https://github.com/dokku/dokku/pull/8591", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/dokku/dokku/security/advisories/GHSA-j6qq-xg73-ghqg", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "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 \u2014 including overwriting ~/.ssh/authorized_keys to gain unrestricted shell access. This vulnerability is fixed in 0.38.2."}], "lastModified": "2026-06-26T18:56:11.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:dokku:dokku:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "5D111D37-869B-4B10-9590-9B2E278E5ECD", "versionEndExcluding": "0.38.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}