CVE-2026-21309
Published: 11 March 2026
Summary
CVE-2026-21309 is a high-severity Incorrect Authorization (CWE-863) vulnerability in Adobe Commerce. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 34.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Periodic review and update of procedures reduces incorrect authorization implementations over time.
Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.
Defining permitted attribute values and auditing modifications reduces the chance of incorrect authorization outcomes due to tampered or missing labels.
The authorization process and usage restrictions help prevent incorrect authorization for remote access types.
Establishing configuration and connection requirements helps ensure correct rather than incorrect authorization for wireless access.
Establishing connection authorization processes for mobile devices helps ensure authorization decisions are correctly implemented rather than incorrect.
Monitoring account use, notifying on changes, and reviewing accounts for compliance corrects incorrect authorization assignments.
Ensures authorization decisions for external system use are correctly implemented and enforced.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Authz bypass in public-facing Adobe Commerce web app directly enables T1190 for unauthenticated network-based data access.
NVD Description
Adobe Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 and earlier are affected by an Incorrect Authorization vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized view…
more
access of data. Exploitation of this issue does not require user interaction.
Deeper analysisAI
CVE-2026-21309 is an Incorrect Authorization vulnerability (CWE-863) affecting Adobe Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16, and earlier. Published on 2026-03-11, this issue enables a security feature bypass, allowing attackers to gain unauthorized view access to data. The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), indicating high confidentiality impact with network accessibility and low attack complexity.
Unauthenticated attackers with network access to the affected Adobe Commerce instance can exploit this vulnerability without requiring user interaction. Exploitation bypasses authorization controls, resulting in unauthorized read access to sensitive data that should otherwise be protected.
Adobe's security bulletin APSB26-05, detailed at https://helpx.adobe.com/security/products/magento/apsb26-05.html, addresses this issue for the specified versions.
Details
- CWE(s)