nuxsmin sysPass up to 3.2.11 FileBackupService FileBackupService.php doBackupFiles path os command injection

Summaryinfo

A vulnerability was found in nuxsmin sysPass up to 3.2.11. It has been rated as problematic. This issue affects the function FileBackupService::doBackupFiles of the file lib/SP/Services/Backup/FileBackupService.php of the component FileBackupService. Performing a manipulation of the argument path results in os command injection. This vulnerability is identified as CVE-2026-63725. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in nuxsmin sysPass up to 3.2.11. This affects the function FileBackupService::doBackupFiles of the file lib/SP/Services/Backup/FileBackupService.php of the component FileBackupService. The manipulation of the argument path with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-63725 since 07/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/07/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

By approaching the search of inurl:lib/SP/Services/Backup/FileBackupService.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• nuxsmin

Name

• sysPass

Version

• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.2.5
• 3.2.6
• 3.2.7
• 3.2.8
• 3.2.9
• 3.2.10
• 3.2.11

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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• 🔒

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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