CVE-2026-44885 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-44885MEDIUM

Portainer: Path traversal in backup archive extraction allows arbitrary file write

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   H   N  U  N  H  L    5.5   .0061   46.4     —

AFFECTED
  Product    Versions               Fixed
  portainer  >= 2.33.0, < 2.33.8 –  —

TIMELINE
  May 7   Reserved by GitHub_M
  May 28  EXPLOIT PUBLISHED — CVE-2026-44885 (portainer). Public exploit reference added.
  May 28  Published (CNA: GitHub_M)

CWE-22 · CNA: GitHub_M · CVSS v3.1 · 2 references · NVD status: Analyzed

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 7, 2026	Reserved	Reserved by GitHub_M
May 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44885 (portainer). Public exploit reference added.
May 28, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
portainer	portainer	—	>= 2.33.0, < 2.33.8	—

Weaknesses

CWE-22

References (2)

https://github.com/portainer/portainer-suite/pull/1875 [Broken Link]
https://github.com/portainer/portainer/security/advisories/GHSA-m8fg-67j7-cx4v [Exploit, Third Party Advisory]

Authoritative record: CVE-2026-44885 at cve.org

Vendors: portainer

Weaknesses: CWE-22

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44885 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.