CVE-2026-21282: Adobe Commerce

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

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 Improper Input Validation vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability by providing specially crafted input, causing limited impact to application availability. Exploitation of this issue does not require user interaction.

Affected products

• Adobe Commerce: before 2.4.4 (fixed in 2.4.4); version 2.4.4 only; version 2.4.5 only; version 2.4.6 only; version 2.4.7 only; version 2.4.8 only; …
• Adobe Commerce b2b: before 1.3.3 (fixed in 1.3.3); version 1.3.3 only; version 1.3.4 only; version 1.3.5 only; version 1.4.2 only; version 1.5.2 only; …
• Adobe Magento: before 2.4.5 (fixed in 2.4.5); version 2.4.5 only; version 2.4.6 only; version 2.4.7 only; version 2.4.8 only; version 2.4.9 only

Published 2026-03-11. Last modified 2026-08-28.