CVE-2026-21282

Adobe Commerce | Improper Input Validation (CWE-20)

State: Published
Severity: 5.3 Medium
Published: Mar 11, 2026
Updated: Aug 27, 2026
Reserved: Dec 12, 2025

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 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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	adobe

Weaknesses

CWE-20 Improper Input Validation (CWE-20)

Affected Products

Product	Versions
Adobe CommerceAdobe	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 earlierAffected 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17Not affected
Adobe Commerce B2BAdobe	1.5.3-alpha3, 1.5.2-p3, 1.4.2-p8, 1.3.5-p13, 1.3.4-p15, 1.3.3-p16 and earlierAffected 1.5.3-beta1, 1.5.2-p4, 1.4.2-p9, 1.3.5-p14, 1.3.4-p16, 1.3.3-p17Not affected
Magento Open SourceAdobe	2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15 and earlierAffected 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16Not affected

References

https://helpx.adobe.com/security/products/magento/apsb26-05.htmlvendor-advisory

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