CVE-2026-63725 sysPass FileBackupService Authenticated OS Command Injection via Backup Path
An authenticated administrator can execute arbitrary OS commands via a malicious backup path, leading to full credential disclosure and system compromise.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-63725?
CVE-2026-63725 is a high-severity command injection vulnerability in nuxsmin sysPass, published on 6 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
sysPass's FileBackupService::doBackupFiles() in lib/SP/Services/Backup/FileBackupService.php around line 388 builds a tar shell command by string-concatenating the backup directory path $this->path directly into the command line ('tar czf ' . $backupFileApp . ' ' . BASE_PATH . ' --exclude \"' . $this->path . '\" 2>&1') and passes the result to PHP's exec() with no application of escapeshellarg() and no validation of the path against a safe character set. The $this->path value is read from the sysPass configuration, which is persisted in the database and writable through the admin settings API and the admin UI. An administrator (or an attacker who has obtained an admin API token or admin session) can therefore store a backup path containing shell metacharacters and trigger a backup operation to execute arbitrary OS commands as the web server process user (typically www-data or apache). Because sysPass is a password manager whose sole purpose is to hold credentials for other systems, code execution as the web-server user permits reading sysPass's master password and encryption key from memory or configuration files, decrypting every stored credential in the database, exporting the entire password vault, pivoting to internal systems using the disclosed credentials, and installing persistent backdoors on the password-manager host.
Weakness: CWE-78
Which versions are affected by CVE-2026-63725?
How do I fix CVE-2026-63725?
No fix has been published for CVE-2026-63725 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-63725 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63725 exists.
Sources
Also known as GHSA-cqxp-cq56-pxvr.