CVE-2026-44885

{"id": "CVE-2026-44885", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 1.2}]}, "published": "2026-05-28T22:16:59.803", "references": [{"url": "https://github.com/portainer/portainer-suite/pull/1875", "tags": ["Broken Link"], "source": "security-advisories@github.com"}, {"url": "https://github.com/portainer/portainer/security/advisories/GHSA-m8fg-67j7-cx4v", "tags": ["Exploit", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "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 \u2014 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."}], "lastModified": "2026-06-01T18:08:20.353", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:portainer:portainer:*:*:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "4E7FE81D-D489-4034-9DB4-D48E3B6C3CE4", "versionEndExcluding": "2.33.8", "versionStartIncluding": "2.33.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}