🛡️ CVE-2026-5347
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-862 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The HM Books Gallery plugin for WordPress is vulnerable to Missing Authorization in versions up to and including 4.8.0. This is due to the absence of capability checks and nonce verification in the admin_init hook that handles the permalink settings update at line 205-209 of wp-books-gallery.php. The vulnerable code checks only for the presence of the 'permalink_structure' POST parameter before updating the 'wbg_cpt_slug' option, without verifying that the request comes from an authenticated administrator. This makes it possible for unauthenticated attackers to modify the custom post type slug for the books gallery, which changes the URL structure for all book entries and can break existing links and SEO rankings.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-862
Public Exploit ✅ No
Source NVD
Published 2026-04-24
Updated 2026-06-02
Modified 2026-04-24
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

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