What is CVE-2026-21282?

CVE-2026-21282 is a medium-severity vulnerability in Adobe Commerce, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-03-11.

How severe is CVE-2026-21282?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in Adobe Commerce

CVE-2026-21282

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.005 (41.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Adobe Commerce — versions 0
Adobe Commerce — versions 2.4.4, 2.4.5, 2.4.6
Adobe Commerce_b2b — versions 1.3.3, 1.3.4, 1.3.5
Adobe Magento — versions 2.4.5, 2.4.6, 2.4.7

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@adobe.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21282?: CVE-2026-21282 is a medium-severity vulnerability in Adobe Commerce, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2026-03-11.
How severe is CVE-2026-21282?: Medium severity. CVSS v3 base score is 5.3 out of 10.