CVE-2026-44884: Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and…

PriorityP342medium6.5CVSS 3.1

AVNACLPRLUINSUCHINAN

EPSS

0.26%

17.0th percentile

Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8 and 2.39.1, a missing authorization vulnerability in the Custom Template file endpoint (GET /api/custom_templates/{id}/file) allows any authenticated user to read the file content of any custom template by enumerating sequential integer IDs, bypassing Resource Control access restrictions. Template files may contain environment-specific values such as connection strings, API tokens, or registry credentials that administrators would not expect standard users to read. This vulnerability is fixed in 2.33.8 and 2.39.1.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
github.com	portainer_portainer	>= 2.33.0 < 2.33.8	2.33.8
github.com	portainer_portainer	>= 2.39.0 < 2.39.1	2.39.1
portainer	portainer	—	—
portainer	portainer	—	—
portainer	portainer	>= 2.33.0 < 2.33.8	2.33.8
portainer	portainer	>= 2.39.0 < 2.39.1	2.39.1

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvdv4.06.0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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