CVE-2024-39408: Adobe Commerce CSRF Vulnerability

CVE-2024-39408 Overview

CVE-2024-39408 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] affecting Adobe Commerce and Magento Open Source. Affected versions include 2.4.7-p1, 2.4.6-p6, 2.4.5-p8, 2.4.4-p9, and earlier releases. An attacker can bypass security features and perform minor integrity changes on behalf of an authenticated user. Exploitation requires user interaction, typically by tricking a victim into clicking a crafted link or loading a page that submits a malicious request.

Critical Impact

An attacker can coerce an authenticated Adobe Commerce user into performing unintended state-changing actions, resulting in low-impact integrity changes to the application.

Affected Products

• Adobe Commerce 2.4.7-p1 and earlier
• Adobe Commerce 2.4.6-p6, 2.4.5-p8, 2.4.4-p9 and earlier patch lines
• Magento Open Source (same version ranges)

Discovery Timeline

• 2024-08-14 - CVE-2024-39408 published to NVD
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-39408

Vulnerability Analysis

The vulnerability stems from missing or insufficient anti-CSRF controls on specific Adobe Commerce request handlers. A CSRF flaw allows a remote attacker to craft a request that, when loaded in a victim's browser session, is executed under the victim's authenticated context. Because the application does not adequately validate the origin or presence of a CSRF token, the server processes the forged request as legitimate.

Root Cause

The root cause is classified under [CWE-352] Cross-Site Request Forgery. The affected endpoints rely on ambient browser authentication (session cookies) without enforcing a synchronizer token, origin check, or SameSite cookie policy strict enough to block cross-origin submissions. This design gap allows an attacker-controlled page to issue state-changing requests on behalf of the user.

Attack Vector

Exploitation occurs over the network with low attack complexity and requires user interaction. The attacker lures an authenticated Commerce or Magento user to a malicious page or crafted link. The page submits a hidden form or background request to the vulnerable endpoint using the victim's session, producing low-impact integrity changes. No privileges are required on the attacker side, but a valid victim session is needed for the request to succeed.

No public proof-of-concept, exploit code, or in-the-wild exploitation has been published for this issue. Technical specifics of the vulnerable endpoint are described in the Adobe Security Advisory APSB24-61.

Detection Methods for CVE-2024-39408

Indicators of Compromise

• Unexpected state-changing POST or GET requests to Commerce endpoints lacking a valid form_key parameter.
• HTTP referer headers originating from external domains unrelated to the Commerce storefront or admin panel.
• Repeated administrative or account-modification events traced back to a legitimate user session without corresponding user-initiated UI navigation.

Detection Strategies

• Review web server and application logs for requests to sensitive endpoints without the expected CSRF token parameter.
• Correlate suspicious state-change events with referer and origin headers to detect cross-site submissions.
• Enable Adobe Commerce audit logging to track user-driven changes and compare them against normal interaction patterns.

Monitoring Recommendations

• Monitor WAF logs for POST requests with external referers targeting Commerce admin or account URIs.
• Alert on anomalous spikes in profile, cart, or checkout state changes per session.
• Ingest Commerce and web server logs into a centralized SIEM for cross-correlation of session, origin, and request-token anomalies.

How to Mitigate CVE-2024-39408

Immediate Actions Required

• Apply the Adobe security update referenced in APSB24-61 to all Adobe Commerce and Magento Open Source instances.
• Inventory all Commerce deployments and confirm versions are patched beyond 2.4.7-p1, 2.4.6-p6, 2.4.5-p8, and 2.4.4-p9.
• Enforce SameSite cookie attributes and validate that admin and customer sessions require the form_key token on state-changing routes.

Patch Information

Adobe addressed CVE-2024-39408 in the security update documented in Adobe Security Advisory APSB24-61. Administrators should upgrade to the fixed releases that supersede 2.4.7-p1, 2.4.6-p6, 2.4.5-p8, and 2.4.4-p9. Review Adobe's advisory for the complete list of fixed versions and prerequisite patch levels.

Workarounds

• Deploy a web application firewall rule to block cross-origin POST requests to sensitive Commerce endpoints lacking a valid form_key.
• Set session cookies with SameSite=Lax or SameSite=Strict to limit cross-site request submission under the victim's session.
• Educate administrative users to avoid clicking untrusted links while authenticated to the Commerce admin interface.

# Example Nginx header hardening for Commerce sessions
add_header Set-Cookie "PHPSESSID=$cookie_PHPSESSID; Path=/; Secure; HttpOnly; SameSite=Lax";