CVE-2025-27191 Overview
CVE-2025-27191 is an Improper Access Control vulnerability [CWE-284] affecting Adobe Commerce, Adobe Commerce B2B, and Magento Open Source. The flaw allows a remote unauthenticated attacker to bypass security controls and gain unauthorized access to protected functionality. Exploitation requires no user interaction and can be triggered over the network. Adobe published the fix in security advisory APSB25-26 on April 8, 2025.
Critical Impact
An unauthenticated network attacker can bypass access control mechanisms in Adobe Commerce storefronts, undermining the integrity of protected resources without requiring user interaction.
Affected Products
- Adobe Commerce versions 2.4.7-p4, 2.4.6-p9, 2.4.5-p11, 2.4.4-p12, 2.4.8-beta2 and earlier
- Adobe Commerce B2B versions 1.5.1, 1.4.2-p4, 1.3.5-p9, 1.3.4-p11, 1.3.3-p12 and earlier
- Magento Open Source versions 2.4.7-p4, 2.4.6-p9, 2.4.5-p11, 2.4.4-p12, 2.4.8-beta2 and earlier
Discovery Timeline
- 2025-04-08 - CVE-2025-27191 published to NVD
- 2025-04-08 - Adobe releases security advisory APSB25-26
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-27191
Vulnerability Analysis
CVE-2025-27191 is classified as Improper Access Control [CWE-284]. The vulnerability exists in access control logic within Adobe Commerce and Magento Open Source. An attacker can send crafted network requests that reach protected functionality without satisfying the authorization checks the application intends to enforce.
The vulnerability is scoped to a security feature bypass. Adobe describes the impact as limited to integrity, with no direct confidentiality or availability effects. However, bypassing security features in an e-commerce stack can enable downstream abuse of order, cart, or account workflows depending on the affected code path.
The issue is remotely exploitable, requires no privileges, and requires no user interaction, which lowers the bar for opportunistic scanning and exploitation attempts against internet-exposed storefronts.
Root Cause
The root cause is missing or insufficient authorization enforcement on one or more application endpoints. Access decisions were not consistently applied for the affected functionality, allowing requests that should have been rejected to proceed. Adobe has not published component-level details beyond the advisory.
Attack Vector
Exploitation occurs over the network against a vulnerable Adobe Commerce, Adobe Commerce B2B, or Magento Open Source storefront. The attacker crafts HTTP requests targeting endpoints where access control is not properly enforced. Because authentication and user interaction are not required, exploitation can be automated at scale against exposed instances.
No public proof-of-concept exploit code has been observed, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Refer to the Adobe Magento Security Advisory APSB25-26 for further technical context.
Detection Methods for CVE-2025-27191
Indicators of Compromise
- Unauthenticated HTTP requests to Adobe Commerce or Magento endpoints returning HTTP 200 for resources that normally require authentication or elevated roles.
- Anomalous access patterns targeting admin, checkout, or REST/GraphQL API endpoints from unfamiliar source IPs.
- Unexpected modifications to catalog, cart, order, or customer records without a corresponding authenticated administrative session.
Detection Strategies
- Inventory all Adobe Commerce, Adobe Commerce B2B, and Magento Open Source deployments and compare running versions against the fixed releases in APSB25-26.
- Enable verbose web server and application logging for /rest/, /graphql, and admin routes to identify unauthenticated access to protected functionality.
- Deploy WAF signatures or virtual patches from your vendor that target the improper access control pattern described in the Adobe advisory.
Monitoring Recommendations
- Alert on spikes of anonymous requests to Magento API endpoints, especially from single source IPs or hosting-provider ranges.
- Correlate storefront access logs with database audit logs to detect state changes that lack a matching authenticated session identifier.
- Track failed and successful authorization decisions in application logs to baseline normal behavior and surface anomalies.
How to Mitigate CVE-2025-27191
Immediate Actions Required
- Apply the Adobe security patches published in APSB25-26 to all Adobe Commerce, Adobe Commerce B2B, and Magento Open Source instances.
- Restrict administrative and API endpoints to trusted networks or via VPN where operationally feasible.
- Review recent access logs for evidence of unauthenticated requests hitting endpoints that should require authorization.
Patch Information
Adobe addressed CVE-2025-27191 in the April 2025 security update for Adobe Commerce and Magento Open Source. Upgrade to a fixed release beyond 2.4.7-p4, 2.4.6-p9, 2.4.5-p11, 2.4.4-p12, or 2.4.8-beta2, and for Adobe Commerce B2B beyond 1.5.1, 1.4.2-p4, 1.3.5-p9, 1.3.4-p11, or 1.3.3-p12. See the Adobe Magento Security Advisory for the complete list of fixed versions and download links.
Workarounds
- If immediate patching is not possible, place the affected storefront behind a Web Application Firewall configured to block anomalous requests to sensitive endpoints.
- Enforce network-level access restrictions on /admin and API paths using IP allowlists at the load balancer or reverse proxy.
- Enable two-factor authentication and rotate administrative credentials as a compensating control while validating patch deployment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
