CVE-2026-14503 json
pCloud WP Backup <= 2.0.3 - Missing Authorization on the 'start_backup' AJAX Method to Authenticated (Subscriber+) Arbitrary File Read
published 2026-07-17 3 mo ago modified 2026-07-17 3 mo ago also EUVD-2026-45132
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 43%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- ploudapp pCloud WP Backup
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/0b301c6e-a3c5-4435-9bc9-fab18085fe2d?source=cve
- plugins.trac.wordpress.org /browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L572
- plugins.trac.wordpress.org /browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L210
- plugins.trac.wordpress.org /browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L1635
- plugins.trac.wordpress.org /browser/pcloud-wp-backup/tags/2.0.2/Pcloud/Classes/class-wp2pcloudfilebackup.php#L111
- plugins.trac.wordpress.org /browser/pcloud-wp-backup/tags/2.0.2/pcloud-wp-backup.php#L217
- plugins.trac.wordpress.org /changeset?reponame=&old=3597399%40pcloud-wp-backup&new=3597399%40pcloud-wp-backup
Sources
- CVE List CVE-2026-14503
- NVD CVE-2026-14503
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.