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Vulnerability record · CVE-2026-1311 · published 26 February 2026

CVE-2026-1311: Path traversal vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.76% · top 46.4% CWE-22 · Path traversal Deferred
8.8CVSS 3.1 base score
0.76%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-1311), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.