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CVE-2026-72533— Portainer Portainer CE - Authentication Bypass

Quick assessment

Affected
Portainer Portainer CE
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Portainer Community Edition是Portainer公司的一款容器与虚拟化管理工具。 Portainer Community Edition 2.44.0及之前版本存在授权问题漏洞，该漏洞源于代理端点未能在应用访问控制前规范化请求路径，导致经过身份验证的低权限用户可通过非规范URL规范化绕过Docker代理授权检查，成功利用可能授予攻击者对底层Docker主机的root级访问权限。

CVSS 8.8 · High EPSS 0.56% · P44

Affected Version Matrix 1

VendorProduct Version RangeStatus
Portainer Portainer CE ≤ 2.44.0 affected
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I. Basic Information for CVE-2026-72533

Vulnerability Information
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Vulnerability Title
Portainer Portainer CE - Authentication Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Portainer Community Edition 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Portainer Community Edition是Portainer公司的一款容器与虚拟化管理工具。 Portainer Community Edition 2.44.0及之前版本存在授权问题漏洞，该漏洞源于代理端点未能在应用访问控制前规范化请求路径，导致经过身份验证的低权限用户可通过非规范URL规范化绕过Docker代理授权检查，成功利用可能授予攻击者对底层Docker主机的root级访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Portainer Portainer CE 0 ~ 2.44.0 -

II. Public POCs for CVE-2026-72533

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7004 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-72533

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Vendor Pages for CVE-2026-72533 (1)

IV. Related Vulnerabilities

Same vendor: Portainer
Same weakness: CWE-287

V. Comments for CVE-2026-72533

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