CVE-2026-5361: XSS in Envira Gallery Lite WordPress Plugin
Platform
wordpress
Component
envira-gallery-lite
Fixed in
1.12.5
CVE-2026-5361 describes a Stored Cross-Site Scripting (XSS) vulnerability affecting the Envira Gallery Lite plugin for WordPress. This vulnerability allows attackers to inject malicious scripts into the gallery, potentially leading to unauthorized code execution within a user's browser. The vulnerability impacts versions 1.0.0 through 1.12.4 and is resolved in version 1.12.5.
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Impact and Attack Scenarios
An attacker exploiting this XSS vulnerability could inject arbitrary JavaScript code into the Envira Gallery Lite plugin. This code could then be executed in the browsers of users viewing the affected gallery. The impact ranges from simple defacement and redirection to more severe consequences like stealing session cookies, phishing attacks, or even gaining control of the user's WordPress account. The REST API endpoint is a common target for such attacks, and successful exploitation could impact a significant number of WordPress sites using the Envira Gallery Lite plugin. The lack of proper sanitization of the 'arrows' parameter is the root cause, allowing attackers to bypass security measures.
Exploitation Context
CVE-2026-5361 was published on 2026-05-14. Severity is rated as Medium (CVSS 6.4). No public exploits or active campaigns have been reported as of this writing. The vulnerability is not currently listed on KEV or EPSS, indicating a low to medium probability of exploitation. Refer to the official Envira Gallery Lite advisory for further details.
Threat Intelligence
Exploit Status
CISA SSVC
CVSS Vector
What do these metrics mean?
- Attack Vector
- Network — remotely exploitable over the internet. No physical or local access required. Widest attack surface.
- Attack Complexity
- Low — no special conditions required. Attacker can exploit reliably without depending on rare configurations or timing.
- Privileges Required
- Low — any valid user account is sufficient. Basic authenticated access required.
- User Interaction
- None — attack is automatic and silent. Victim does nothing: no click, no file open.
- Scope
- Changed — successful attack can pivot beyond the vulnerable component to other systems or the host OS.
- Confidentiality
- Low — partial or indirect data access. Attacker gains limited information.
- Integrity
- Low — attacker can modify some data with limited scope or impact.
- Availability
- None — no availability impact. Service remains fully operational.
Affected Software
Weakness Classification (CWE)
Timeline
- Reserved
- Published
- Modified
Mitigation and Workarounds
The primary mitigation for CVE-2026-5361 is to upgrade the Envira Gallery Lite plugin to version 1.12.5 or later. If immediate upgrading is not possible due to compatibility issues or testing requirements, consider implementing a Web Application Firewall (WAF) rule to block requests to the vulnerable REST API endpoint with suspicious parameters. Carefully review any custom code interacting with the gallery data to ensure proper input sanitization and output escaping. Monitor WordPress logs for unusual activity or attempts to access the REST API with potentially malicious payloads.
How to fix
Update to version 1.12.5, or a newer patched version
Frequently asked questions
What is CVE-2026-5361 — XSS in Envira Gallery Lite?
CVE-2026-5361 is a Stored Cross-Site Scripting (XSS) vulnerability in the Envira Gallery Lite WordPress plugin, allowing attackers to inject malicious scripts via the REST API.
Am I affected by CVE-2026-5361 in Envira Gallery Lite?
You are affected if you are using Envira Gallery Lite versions 1.0.0 through 1.12.4. Check your plugin version and update if necessary.
How do I fix CVE-2026-5361 in Envira Gallery Lite?
Upgrade the Envira Gallery Lite plugin to version 1.12.5 or later. Consider WAF rules as a temporary mitigation if upgrading is not immediately possible.
Is CVE-2026-5361 being actively exploited?
As of now, there are no reports of active exploitation or public exploits for CVE-2026-5361, but vigilance is still advised.
Where can I find the official Envira Gallery Lite advisory for CVE-2026-5361?
Refer to the official Envira Gallery Lite website and WordPress plugin repository for the latest advisory and update information.
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