CVE-2026-44885: Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and…

PriorityP337medium5.5CVSS 3.1

AVNACLPRHUINSUCNIHAL

EPSS

0.61%

44.5th 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, Portainer's backup restore feature accepts a .tar.gz archive and extracts it to a target directory on the server. The extraction function (ExtractTarGz in api/archive/targz.go) constructed output paths using filepath.Clean(filepath.Join(outputDirPath, header.Name)). This combination does not prevent directory traversal — a tar entry named ../../etc/cron.d/evil resolves to a path outside the extraction root, so a crafted archive can write files to arbitrary locations on the server filesystem. This vulnerability is fixed in 2.33.8.

Affected

3 ranges

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

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