CVE-2026-57678: Slider Revolution XSS Vulnerability

CVE-2026-57678 Overview

CVE-2026-57678 is a reflected Cross-Site Scripting (XSS) vulnerability in the ThemePunch Slider Revolution WordPress plugin. The flaw affects versions 7.0.0 through 7.0.16 and stems from improper neutralization of user input during web page generation [CWE-79]. An unauthenticated attacker can craft a malicious URL that, when clicked by a victim, executes arbitrary JavaScript in the victim's browser session. The vulnerability carries a CVSS score of 7.1 and requires user interaction to trigger. Slider Revolution is a widely deployed WordPress plugin, expanding the potential attack surface across sites that embed it.

Critical Impact
Attackers can execute arbitrary JavaScript in a victim's browser, enabling session hijacking, credential theft, and unauthorized actions against WordPress sites running vulnerable Slider Revolution versions.

Affected Products

ThemePunch Slider Revolution 7.0.0 through 7.0.16
WordPress installations with the revslider plugin enabled
Websites embedding Slider Revolution sliders on public-facing pages

Discovery Timeline

2026-07-02 - CVE-2026-57678 published to NVD
2026-07-02 - Last updated in NVD database

Technical Details for CVE-2026-57678

Vulnerability Analysis

CVE-2026-57678 is a reflected XSS flaw in the Slider Revolution plugin. The plugin fails to properly sanitize or encode user-controlled input before including it in HTTP response content. When a victim visits a specially crafted URL containing malicious payload, the injected script executes in the browser under the origin of the vulnerable WordPress site. Because the scope is marked as changed, the vulnerability can affect resources beyond the vulnerable component, such as authenticated sessions in the WordPress admin context. The attack requires user interaction, typically achieved through phishing or social engineering.

Root Cause

The root cause is improper neutralization of input during web page generation [CWE-79]. Input reflected in HTTP responses is not adequately encoded for the HTML output context. Any user-supplied data flowing into the response without contextual escaping enables the injection of <script> tags or event handler attributes that the browser interprets and executes.

Attack Vector

The attack vector is network-based with low complexity and no privileges required. An attacker constructs a URL targeting the vulnerable Slider Revolution endpoint, embedding JavaScript in a reflected parameter. The attacker delivers the URL via email, chat, or a malicious page. When a logged-in WordPress user or site visitor follows the link, the payload executes. Consequences include cookie theft, session token exfiltration, forced administrative actions via CSRF chaining, and redirection to attacker-controlled infrastructure. Additional technical details are available in the Patchstack WordPress Vulnerability Advisory.

Detection Methods for CVE-2026-57678

Indicators of Compromise

HTTP requests to Slider Revolution endpoints containing URL-encoded <script>, onerror=, onload=, or javascript: payloads in query parameters
Referer headers from external phishing domains directing traffic to Slider Revolution URLs
Unexpected outbound requests from browsers to attacker-controlled domains following visits to plugin URLs
WordPress admin session cookies observed in web server access logs or third-party telemetry

Detection Strategies

Deploy Web Application Firewall (WAF) rules that flag reflected XSS payload patterns targeting revslider request parameters
Inspect access logs for anomalous query string content targeting Slider Revolution endpoints
Monitor Content Security Policy (CSP) violation reports for inline script execution attempts on pages that embed the plugin

Monitoring Recommendations

Enable verbose WordPress and web server logging for all requests handled by the revslider plugin
Alert on high-volume requests containing HTML metacharacters such as <, >, ", and ' in Slider Revolution parameters
Correlate suspicious URLs delivered via email gateways with subsequent web traffic to WordPress sites

How to Mitigate CVE-2026-57678

Immediate Actions Required

Upgrade Slider Revolution to a version later than 7.0.16 as soon as the patched release is available from ThemePunch
Audit WordPress sites for exposed Slider Revolution instances and disable the plugin on pages that do not require it
Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins

Patch Information

Refer to the Patchstack WordPress Vulnerability Advisory for the current patch status and remediation guidance. Update the plugin through the WordPress admin dashboard or by replacing the wp-content/plugins/revslider directory with the fixed release.

Workarounds

Configure WAF rules to block requests containing XSS payload signatures targeting revslider endpoints
Restrict access to Slider Revolution administrative and preview URLs to authenticated users on trusted networks
Educate site administrators and editors to avoid clicking unsolicited links referencing their own WordPress domain

bash

# Example WAF rule (ModSecurity) to block reflected XSS payloads on revslider endpoints
SecRule REQUEST_URI "@contains /wp-admin/admin-ajax.php" \
    "chain,id:1057678,phase:2,deny,status:403,msg:'Blocked potential XSS on Slider Revolution'"
    SecRule ARGS "@rx (?i)(<script|onerror=|onload=|javascript:)" "t:none,t:urlDecodeUni"