CVE-2026-5347: CWE-862 Missing Authorization in mhmrajib WP Books Gallery – Build Stunning Book Showcases & Libraries in Minutes
The WP Books Gallery WordPress plugin up to version 4. 8. 0 has a missing authorization vulnerability. This flaw allows unauthenticated attackers to modify the custom post type slug by exploiting the lack of capability checks and nonce verification in the admin_init hook that updates permalink settings. Changing the slug can disrupt URL structures for book entries, potentially breaking links and harming SEO rankings. The vulnerability has a medium severity with a CVSS score of 5. 3. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-5347 is a missing authorization vulnerability (CWE-862) in the WP Books Gallery plugin for WordPress, affecting versions up to 4.8.0. The issue arises because the admin_init hook responsible for updating permalink settings does not perform capability checks or nonce verification before modifying the 'wbg_cpt_slug' option. Instead, it only checks for the presence of the 'permalink_structure' POST parameter. This allows unauthenticated attackers to change the custom post type slug, altering the URL structure for all book entries managed by the plugin.
Potential Impact
An attacker can modify the custom post type slug without authentication, which changes the URL structure for all book entries. This can break existing links and negatively impact SEO rankings. There is no direct confidentiality or availability impact reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected plugin's administrative functions and monitor for unusual changes to permalink settings. Avoid exposing the plugin to untrusted users or anonymous requests. Follow vendor channels for updates on patches or official mitigations.
CVE-2026-5347: CWE-862 Missing Authorization in mhmrajib WP Books Gallery – Build Stunning Book Showcases & Libraries in Minutes
Description
The WP Books Gallery WordPress plugin up to version 4. 8. 0 has a missing authorization vulnerability. This flaw allows unauthenticated attackers to modify the custom post type slug by exploiting the lack of capability checks and nonce verification in the admin_init hook that updates permalink settings. Changing the slug can disrupt URL structures for book entries, potentially breaking links and harming SEO rankings. The vulnerability has a medium severity with a CVSS score of 5. 3. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 5.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-5347 is a missing authorization vulnerability (CWE-862) in the WP Books Gallery plugin for WordPress, affecting versions up to 4.8.0. The issue arises because the admin_init hook responsible for updating permalink settings does not perform capability checks or nonce verification before modifying the 'wbg_cpt_slug' option. Instead, it only checks for the presence of the 'permalink_structure' POST parameter. This allows unauthenticated attackers to change the custom post type slug, altering the URL structure for all book entries managed by the plugin.
Potential Impact
An attacker can modify the custom post type slug without authentication, which changes the URL structure for all book entries. This can break existing links and negatively impact SEO rankings. There is no direct confidentiality or availability impact reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected plugin's administrative functions and monitor for unusual changes to permalink settings. Avoid exposing the plugin to untrusted users or anonymous requests. Follow vendor channels for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-01T16:35:44.962Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69eb095d87115cfb68f0d938
Added to database: 4/24/2026, 6:10:37 AM
Last enriched: 5/1/2026, 8:50:19 PM
Last updated: 6/7/2026, 9:51:28 AM
Views: 69
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