Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSummary
CVE-2026-21289 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 45th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AU-13 (Monitoring for Information Disclosure) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-21289 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 releases. The flaw enables a security feature bypass, allowing attackers to gain unauthorized view access to data. It 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) and was published on 2026-03-11.
The vulnerability can be exploited by an unauthenticated attacker over the network with low attack complexity and no user interaction required. Successful exploitation bypasses security controls, resulting in high-impact unauthorized access to view sensitive data, though it does not affect integrity or availability.
Adobe's security advisory APSB26-05 provides details on mitigation and patches, available at https://helpx.adobe.com/security/products/magento/apsb26-05.html.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-11043
Vulnerability Data
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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct mapping to exploitation of a public-facing web application (Adobe Commerce) via an authorization bypass vulnerability allowing unauthenticated data access.
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
Mitigating Controls (NIST 800-53 r5) AI
AC-3 enforces approved authorizations for access to information and resources, directly preventing security feature bypasses from incorrect authorization vulnerabilities like CVE-2026-21289.
SI-2 requires timely identification, reporting, and correction of system flaws, including patching the specific incorrect authorization vulnerability in affected Adobe Commerce versions.
AU-13 monitors system areas for unauthorized information disclosure, detecting exploitation attempts that result in unauthorized view access of sensitive data via this vulnerability.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Defining, enforcing, and reviewing access authorizations and least privilege directly prevents incorrect authorization checks.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Requiring consistency between access rights and classification plus formal approval steps ensures that the authorization logic correctly distinguishes between entities that should and should not be granted access.
Enforcing policy-driven approval and role-change reviews stops incorrect or stale authorization decisions from remaining in effect after job changes or terminations.
By tying access rights to identity, device, location and classification, the control reduces the likelihood that an authorization decision will be based on an incorrect or bypassed policy.