# 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.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Aug 2026
- **Updated:** 14 Aug 2026
- **Also known as:** GHSA-cqxp-cq56-pxvr

## 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 (Improper Neutralization of Special Elements used in an OS Command)

## 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.

## Is CVE-2026-63725 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63725 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63725 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63725 exists.

Affected product: nuxsmin sysPass. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-63725/ (Markdown: https://insights.sbomify.com/CVE-2026-63725/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63725
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63725
- OSV: https://osv.dev/vulnerability/CVE-2026-63725

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-63725/
Summaries are generated and may contain mistakes; the official description above is the record.