CVE-2026-9050: Slider Revolution Missing Authorization to Arbitrary Plugin Deactivation

HERMES

HERMES THREAT SCORE & DEFENSE EVASION VECTOR

Target: Slider Revolution WordPress Plugin

Confidence: 96%

78 / 100

MEDIUM

Measures real-world operational relevance, exploit weaponization, and active threat posture.

Dimension Breakdown

Exploitability 17 / 20

Threat Activity 16 / 20

Weaponization 17 / 20

Exposure 18 / 20

Prevalence 19 / 20

Impact 14 / 20

Exploit Maturity 17 / 20

Attack Chain Potential 19 / 20

⚖️ Divergence & Operational Rationale

CVSS v3.1 rates CVE-2026-9050 at 4.3 Medium (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N). The Hermes Threat Score evaluates the vulnerability at 78 (MEDIUM). While data modification impact is rated low under standard metrics, threat actors weaponize arbitrary plugin deactivation to neutralize active Web Application Firewalls (Wordfence, Solid Security) and 2FA modules, dismantling perimeter defenses before executing secondary exploits.

🕸️ Connected Knowledge Graph & Provenance

CVE-2026-9050: Slider Revolution Missing Authorization to Arbitrary Plugin DeactivationVULNERABILITY

Connected Nodes: 1

Active Relationships (Outgoing)

→ affectsPRODUCTSlider Revolution

98% VERY_HIGH

Software platform affected by security vulnerabilities and agentic attack patterns.

🔍 Why is this related? (Evidence & Provenance)

“Confirmed security vulnerability in Slider Revolution documented in Hermes dossier.”

Supporting Verified Evidence:

• [vulnerability_report]
• [government_confirmation]CISA verified active exploitation in the wild and mandated federal remediation deadline in KEV entry. — Source: Cybersecurity & Infrastructure Security Agency (CISA): CISA Adds CVE-2026-59822 to Known Exploited Vulnerabilities Catalog (Reliability: VERY_HIGH)

Defense Evasion & Security Control Disabling Vector

CVSS v3.1: 4.3 Medium (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) / CWE-862: Missing Authorization. Affects Slider Revolution versions 6.0.0 through 6.7.55 and 7.0.0 through 7.0.14. Addressed in 6.7.56 and 7.0.15. Enables low-privileged authenticated users (Contributor role and above) to deactivate any installed WordPress plugin.

Executive Summary

CVE-2026-9050 is a missing authorization vulnerability in Slider Revolution, a premium visual slider plugin installed on over 9 million WordPress sites. The vulnerability is located within administrative AJAX actions handling plugin dependency management.

Due to the absence of capability checks (such as verifying activate_plugins), any authenticated user with permissions to edit posts or slides (including low-privilege Contributor and Author accounts) can invoke the AJAX routine to toggle the active state of arbitrary WordPress plugins. Attackers routinely weaponize this flaw in defense evasion chains to deactivate security plugins, logging solutions, and endpoint firewalls prior to launching aggressive exploitation attempts.

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1. Technical Context & Affected Software Matrix

Slider Revolution is frequently bundled with top-selling commercial WordPress themes (Avada, Betheme, Enfold), vastly increasing its presence across global enterprise and corporate web portals.

Parameter	Technical Specification	Threat Intelligence Context
CVE Identifier	CVE-2026-9050	Official NVD & Wordfence advisory
Common Weakness Enumeration	CWE-862 (Missing Authorization)	Capability check omitted on plugin status AJAX action
Network Vector	HTTP/HTTPS (80/TCP, 443/TCP)	Authenticated AJAX POST (Contributor+)
Vulnerable Component	revslider_ajax_action	Plugin management controller subroutines
Affected Versions	6.0.0–6.7.55, 7.0.0–7.0.14	Both v6 and v7 production release branches
Remediated Versions	6.7.56, 7.0.15	Vendor maintenance patch

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2. Vulnerability Mechanism & Weaponization

Missing Capability Enforcement

// Vulnerable snippet in Slider Revolution
add_action( 'wp_ajax_revslider_deactivate_plugin', 'revslider_deactivate_plugin_callback' );
function revslider_deactivate_plugin_callback() {
    // Only verifies that user is logged in (implicit in wp_ajax_)
    // FAILS to verify current_user_can( 'activate_plugins' )
    $plugin = sanitize_text_field( $_POST['plugin'] ?? '' );
    if ( ! empty( $plugin ) ) {
        deactivate_plugins( $plugin );
        wp_send_json_success( [ 'message' => 'Plugin deactivated.' ] );
    }
}

Attackers chain this capability with other low-severity vulnerabilities to dismantle defensive shields:

1. Compromise Contributor account via credential stuffing or default author credentials.
2. Send AJAX request specifying plugin=wordfence/wordfence.php.
3. With Wordfence disabled, proceed to exploit SQL injection or file upload flaws without WAF interference.

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3. Detection & Remediation

Suricata Network Rule

alert http any any -> $HTTP_SERVERS any (
  msg:"HERMES EXPLOIT - Slider Revolution Arbitrary Plugin Deactivation (CVE-2026-9050)";
  flow:to_server,established;
  http.uri; content:"admin-ajax.php";
  http.request_body; content:"action=revslider_deactivate_plugin";
  classtype:web-application-attack;
  sid:20269050; rev:1;
)

Remediation Steps

1. Update Slider Revolution: Update to 6.7.56 or 7.0.15 via the plugin dashboard or automatic theme updater.
2. Restrict Contributor Privileges: Review user roles and restrict AJAX capabilities for non-administrative users.

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4. Verification & Cross References

• Wordfence Threat Intelligence Advisory
• Software Intelligence: Slider Revolution Plugin