CVE-2025-49550: Adobe Commerce B2B Auth Bypass Flaw

CVE-2025-49550 Overview

CVE-2025-49550 is an Incorrect Authorization vulnerability [CWE-863] affecting Adobe Commerce, Adobe Commerce B2B, and Magento Open Source. The flaw allows an attacker to bypass security controls and gain limited unauthorized access to affected instances. Exploitation requires user interaction, which reduces the ease of attack but does not eliminate risk in phishing-driven scenarios. Adobe published the fix in security bulletin APSB25-50. Affected versions include Adobe Commerce 2.4.8, 2.4.7-p5, 2.4.6-p10, 2.4.5-p12, 2.4.4-p13, and earlier, along with corresponding Magento Open Source and Commerce B2B releases.

Critical Impact
An attacker can bypass authorization checks in Adobe Commerce storefronts to gain limited unauthorized access to protected functionality, provided a legitimate user interacts with a crafted request.

Affected Products

Adobe Commerce 2.4.4 through 2.4.8 (including patch levels up to 2.4.7-p5, 2.4.6-p10, 2.4.5-p12, 2.4.4-p13)
Adobe Commerce B2B 1.3.3 through 1.5.2 release branches
Magento Open Source 2.4.5 through 2.4.8

Discovery Timeline

2025-06-25 - CVE-2025-49550 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-49550

Vulnerability Analysis

CVE-2025-49550 is classified as an Incorrect Authorization weakness [CWE-863]. The affected Commerce components fail to correctly verify that a requesting user is permitted to perform an action or view a resource. When a victim interacts with attacker-supplied content, the flawed check returns an allow decision even though policy should deny the request. The result is a security feature bypass that grants limited unauthorized read access. The attack is network-reachable and requires no prior authentication, but does depend on user interaction such as clicking a crafted link or visiting a prepared page.

Root Cause

The underlying defect is an authorization decision that trusts request-supplied context or omits a required permission check on a specific code path. Adobe categorizes the issue as Incorrect Authorization rather than Missing Authorization, indicating the check exists but evaluates the wrong subject, object, or scope. Because Commerce processes storefront and B2B account contexts differently, a request that traverses the vulnerable path can inherit privileges it should not receive.

Attack Vector

An unauthenticated attacker crafts a request that targets the vulnerable endpoint and delivers it to a Commerce user through phishing or a malicious page. When the user follows the link while logged in, the flawed authorization check accepts the request and exposes limited confidential data. No integrity or availability impact is reported. Adobe has not published exploitation details, and no public proof-of-concept is available. The vulnerability mechanism is described in prose only; see the Adobe Security Advisory for Magento for vendor guidance.

Detection Methods for CVE-2025-49550

Indicators of Compromise

Unexpected GET or POST requests to Commerce customer, quote, or B2B company endpoints originating from external referrers.
Access log entries showing successful 200 responses to resources that should require elevated privileges for the requesting session.
Sudden spikes in cross-origin requests to /rest/, /graphql, or /customer/ paths that correlate with phishing campaigns targeting merchants.

Detection Strategies

Compare adminhtml and storefront access logs against expected role-to-endpoint mappings and alert on deviations.
Deploy web application firewall rules that inspect Commerce API calls for mismatched session context and referrer origin.
Hunt for authenticated sessions performing actions outside their normal behavioral baseline, such as B2B users accessing other companies' data.

Monitoring Recommendations

Enable verbose Commerce logging for authorization decisions and forward events to a centralized data lake for retention and correlation.
Monitor Adobe security bulletin APSB25-50 and downstream vendor advisories for updated indicators.
Track EPSS movement for CVE-2025-49550 to reassess exploitation likelihood as new intelligence emerges.

How to Mitigate CVE-2025-49550

Immediate Actions Required

Apply the Adobe security update referenced in APSB25-50 to all Commerce, Commerce B2B, and Magento Open Source instances.
Inventory Commerce deployments and confirm patch level exceeds 2.4.8, 2.4.7-p5, 2.4.6-p10, 2.4.5-p12, and 2.4.4-p13 respectively.
Rotate administrative sessions and force reauthentication after patching to invalidate any tokens issued during the exposure window.

Patch Information

Adobe released fixed builds in bulletin APSB25-50. Merchants should upgrade to the latest patch level for their release branch and review the Adobe Security Advisory for Magento for exact version numbers and installation guidance. Managed Commerce Cloud customers should verify that Adobe has rolled the patch to their environment.

Workarounds

Restrict access to Commerce admin and B2B endpoints by IP allow-list where feasible until patching completes.
Deploy WAF signatures that block anomalous cross-origin requests to Commerce authorization-sensitive endpoints.
Train merchant and B2B staff on phishing risks, since exploitation requires user interaction with attacker-controlled content.

bash

# Verify Adobe Commerce version and applied patches
php bin/magento --version
composer show magento/product-community-edition | grep versions
composer show magento/product-enterprise-edition | grep versions