5.3Medium
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.
What this means for your business
- It affects Adobe Commerce. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Adobe Commerce, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 5.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Weakness
- CWE-20
- Assigned by
- psirt@adobe.com
Dates
- Published
- 2026-03-11
- Last modified
- 2026-08-28
- Sources
- NVD
Affected products
- Adobe Commerce- 2.4.4, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9
- Adobe Commerce B2b- 1.3.3, 1.3.3, 1.3.4, 1.3.5, 1.4.2, 1.5.2, 1.5.3
- Adobe Magento- 2.4.5, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9
As listed in the NVD configuration data. Not a statement about your estate.