Description
An authentication bypass vulnerability in Portainer CE through 2.44.0 allows authenticated low-privileged users to bypass Docker proxy authorization checks via non-canonical URL normalization, defeating all authorization middleware. The proxy endpoint fails to normalize request paths before applying access controls, allowing crafted requests to be interpreted differently by the proxy and the authorization layer. Successful exploitation grants the attacker root-level access to the underlying Docker host.
Published: 2026-08-11
Score: 8.8 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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References
History

Tue, 11 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
Description An authentication bypass vulnerability in Portainer CE through 2.44.0 allows authenticated low-privileged users to bypass Docker proxy authorization checks via non-canonical URL normalization, defeating all authorization middleware. The proxy endpoint fails to normalize request paths before applying access controls, allowing crafted requests to be interpreted differently by the proxy and the authorization layer. Successful exploitation grants the attacker root-level access to the underlying Docker host.
Title Portainer Portainer CE - Authentication Bypass
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: TuranSec

Published:

Updated: 2026-08-11T15:06:28.365Z

Reserved: 2026-08-10T10:32:49.080Z

Link: CVE-2026-72533

cve-icon Vulnrichment

Updated: 2026-08-11T15:06:24.218Z

cve-icon NVD

Status : Received

Published: 2026-08-11T12:17:38.487

Modified: 2026-08-11T16:17:34.607

Link: CVE-2026-72533

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-11T16:45:03Z

Weaknesses