CVE-2026-56446
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
MISP allows a site administrator to configure an arbitrary filesystem path for the NDJSON error log used by JsonLogTool. Due to the ability to inject PHP code by an attacker with administrator privileges, remote code execution may occur.
Risk Assessment
An attacker with administrator privileges could direct logs to a PHP file in a web-accessible directory, leading to serious risks of remote code execution with the privileges of the web server process.
Recommendation
It is recommended to update MISP to the latest version to apply fixes that restrict log destinations and to implement additional security measures in server configuration.
Other vulnerabilities in MISP
See all- CVE-2026-61474Medium
An improper authorization check in MISP's attribute creation endpoint allowed an authenticated user with permission to add attributes to submit a sharing_group_id without triggering the corresponding sharing group authorization check, as long as the attribute distribution value was not explicitly set to 4 — 'sharing group'.
- CVE-2017-14337High
In MISP versions before 2.4.80, when configured with X.509 certificate authentication alongside a non-MISP external user management API, an unauthenticated user can gain access as an arbitrary user if the API returns an empty value.
- CVE-2026-10868Critical
MISP has a mass assignment vulnerability in the user edit functionality (UsersController::edit()). An authenticated attacker can modify the user ID in the request, leading to updates on another user's account.
- CVE-2026-10611Critical
MISP contains an authentication bypass vulnerability when LDAP mixed authentication is enabled with OTP enforcement. An authenticated user can bypass the OTP step and access the application without providing a TOTP, HOTP, or email OTP code.
- CVE-2024-29859Critical
In MISP before version 2.4.187, the add_misp_export function in app/Controller/EventsController.php does not properly check for a valid file upload.
- CVE-2024-25674Critical
An issue was discovered in MISP before version 2.4.184 related to insecure organization logo uploads due to a lack of checks for file extension and MIME type.
- CVE-2023-50918Critical
In app/Controller/AuditLogsController.php in MISP before version 2.4.182, ACLs for audit logs are mishandled.
- CVE-2023-48659Critical
An issue was discovered in MISP before version 2.4.176 related to mishandling parameter parsing in app/Controller/AppController.php.
- CVE-2022-29528Critical
An issue was discovered in MISP before version 2.4.158 related to PHAR deserialization.
- CVE-2021-39302Critical
MISP version 2.4.148, in certain configurations, allows SQL injection via the $conditions['org'] value in the app/Model/Log.php file.
Original NVD description (English source)
MISP allowed a site administrator to configure an arbitrary filesystem path for the NDJSON error log used by JsonLogTool. Because log entries can include attacker-controlled content, an authenticated attacker with site administrator privileges could direct log output to a PHP file in a web-accessible directory and inject PHP code through logged data. Accessing the resulting file could lead to remote code execution with the privileges of the web server process. The fix restricts log destinations to existing directories beneath APP/tmp/logs or /var/log, requires absolute paths, rejects stream wrappers and traversal-related input, and limits filenames to .log or .ndjson extensions while disallowing executable extension segments.