The Thumbnail Slider With Lightbox plugin for WordPress is vulnerable to Cross-Site Request Forgery in version 1.0. This is due to missing or incorrect nonce validation on the addedit functionality. This makes it possible for unauthenticated attackers to upload arbitrary files via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
CVE-2023-5820 is a high severity with CVSS 8.3 Arbitrary File Upload issue affecting the Plugin Thumbnail Slider With Lightbox. It affects 1.0 through 1.0 and is fixed in 1.0.1.
Use the related hub and response guides to connect this CVE-2023-5820 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2023-5820 is tracked for the Plugin Thumbnail Slider With Lightbox as high severity with CVSS 8.3. The affected range is 1.0 through 1.0. Update Thumbnail Slider With Lightbox to 1.0.1 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with 1.0 through 1.0.
Confirm Thumbnail Slider With Lightbox is updated to 1.0.1 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
wp-responsive-slider-with-lightbox
View on wordpress.org
|
| CVE | CVE-2023-5820 |
| Patched Versions |
1.0.1
|
| Affected Versions |
1.0 through 1.0
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Thumbnail Slider With Lightbox <= 1.0.21 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting
Thumbnail Slider With Lightbox <= 1.0.4 - Authenticated (Admin+) SQL Injection
Thumbnail Slider With Lightbox <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Image Title
Thumbnail Slider With Lightbox <= 1.0 - Cross-Site Request Forgery
Thumbnail Slider With Lightbox <= 1.0.17 - Reflected Cross-Site Scripting
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