CVE-2026-40548
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
SOPlanning version 1.55 and below does not verify uploaded file extensions, allowing an authenticated attacker to upload a crafted ZIP archive containing a malicious file.
Risk Assessment
When combined with another vulnerability (CVE-2026-40547), an attacker can place a malicious file (e.g., PHP) in a web-accessible location and execute it, potentially leading to server compromise.
Recommendation
Update SOPlanning to a version above 1.55 and implement file extension validation and restrictions on archive uploads.
Other vulnerabilities in SOPlanning
See all- CVE-2014-8675High
Soplanning 1.32 and earlier generates static links for sharing ICAL calendars with embedded login information, allowing remote attackers to obtain a calendar owner's password via a brute-force attack on the embedded password hash.
- CVE-2026-50644High
SOPlanning is vulnerable to SQL injection in the audit retention configuration. An attacker with parameters_all rights can inject SQL commands into the audit configuration form which is then saved. Execution is triggered when the audit functionality is accessed by the attacker or another user.
- CVE-2026-40549Medium
SOPlanning version 1.55 and below is vulnerable to CSRF in the groupe_save endpoints (create, modify, delete). An attacker can craft a malicious website that, when visited by an authenticated user, automatically sends a forged request.
- CVE-2026-40547Medium
SOPlanning version 1.55 and below is vulnerable to Path Traversal in backup endpoints. An authenticated remote attacker can exploit a vulnerable endpoint to read and execute files previously added via the backup functionality. Additionally, due to CVE-2026-40543, any backup file can be read by an unauthorized user.
- CVE-2026-40546High
SOPlanning is vulnerable to SQL Injection across multiple endpoints and parameters. Attacker with low privileges can inject arbitrary SQL commands, potentially gaining full control over the database. This issue affects SOPlanning version 1.55 and below.
- CVE-2026-40545Medium
A Reflected XSS vulnerability in SOPlanning (versions 1.55 and below) via the taches parameter. An attacker can craft a malicious URL which, when opened by an authenticated victim, results in arbitrary JavaScript execution in the victim's browser.
- CVE-2026-40544Medium
Stored XSS vulnerability in SOPlanning version 1.55 and below. An authenticated attacker can upload a crafted ZIP archive with a malicious user.csv file containing JavaScript, which executes when a user clicks the Edit button.
- CVE-2026-40543High
SOPlanning version 1.55 and below does not enforce authorization for backup functionalities. An unauthenticated attacker can directly query backup-related endpoints and retrieve backup archives containing user databases with usernames and password hashes, as well as the config.csv file with additional sensitive information.
Original NVD description (English source)
SOPlanning does not verify uploaded file extension. An authenticated attacker with access to the backup functionality can upload a crafted ZIP archive containing a legitimate user.csv file alongside a malicious file, which is extracted on the server. When combined with CVE-2026-40547 (Path Traversal), the malicious file (e.g., a PHP script) can be placed in a web-accessible location and executed via the browser. This issue affects SOPlanning version 1.55 and below.