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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://github.com/portainer/portainer |
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History
Thu, 13 Aug 2026 11:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Portainer
Portainer portainer |
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| Vendors & Products |
Portainer
Portainer portainer |
Tue, 11 Aug 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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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
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Status: PUBLISHED
Assigner: TuranSec
Published: 2026-08-11T11:06:33.537Z
Updated: 2026-08-11T15:06:28.365Z
Reserved: 2026-08-10T10:32:49.080Z
Link: CVE-2026-72533
Updated: 2026-08-11T15:06:24.218Z
Status : Received
Published: 2026-08-11T12:17:38.487
Modified: 2026-08-11T16:17:34.607
Link: CVE-2026-72533
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