CVE-2026-14503: Information Disclosure (CVSS 6.5)

Description

The pCloud WP Backup plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.0.3 via the wp2pcl_ajax_process_request_inner. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract force generation of a full-site backup archive written to a publicly accessible directory, exposing wp-config.php database credentials, WordPress secret salts, and the complete PHP source tree. The resulting archive is deposited in the plugin's unprotected tmp/ directory at a predictable URL, making the extracted data accessible to unauthenticated visitors once the backup is triggered.

Is your site exposed to CVE-2026-14503?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0029

Probability of exploitation

0.21%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-200 CWE-200

References

Other References

https://plugins.trac.wordpress.org/browser/pcloud-wp-backup/tags/2.0.2/Pcloud/Classes/class-wp2pcloudfilebackup.php#L111 https://plugins.trac.wordpress.org/browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L1635 https://plugins.trac.wordpress.org/browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L210 https://plugins.trac.wordpress.org/browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L217 https://plugins.trac.wordpress.org/browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L572 https://plugins.trac.wordpress.org/changeset?reponame=&old=3597399%40pcloud-wp-backup&new=3597399%40pcloud-wp-backup https://www.wordfence.com/threat-intel/vulnerabilities/id/0b301c6e-a3c5-4435-9bc9-fab18085fe2d?source=cve

Frequently Asked Questions

What is CVE-2026-14503? +

The pCloud WP Backup plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.0.3 via the wp2pcl_ajax_process_request_inner. This makes it possible for authenticated attackers, with subscriber-level access and above, to extract force generation of a full-site backup archive written to a publicly accessible directory, exposing wp-config.php database credentials, WordPress secret salts, and the complete PHP source tree. The resulting archive is deposited in the plugin's unprotected tmp/ directory at a predictable URL, making the extracted data accessible to unauthenticated visitors once the backup is triggered. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-14503? +

CVE-2026-14503 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0029, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-14503? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-15625

Unauthenticated user is able to execute arbitrary SQL commands in Sparx Pro Cloud Server database in certain cases.

CVE-2026-22051

StorageGRID (formerly StorageGRID Webscale) versions prior to 11.9.0.13 and 12.0.0.6 are susceptible to a Information Disclosure vulnerability. Successful exploit could …

CVE-2026-54396

An information disclosure vulnerability exists in the MISP AuthKey edit functionality. When a validation error occurs during an AuthKey edit …

CVE-2026-13230

An information disclosure vulnerability was identified in TP-Link Kasa EC70 v4 and EC71 v4 in the local discovery mechanism, which …

CVE-2026-53912

Cerebrate before version 1.37 exposed credential material from self-registration requests. The self-registration workflow stored the registrant’s hashed password in the …

CVE-2026-47177

Quest Bot is an opensource modern Discord Bot built for moderation, utilities and support. Prior to version 1.0.4, a user …

CVE-2026-14503