High severity · published Mar 11, 2026
CVE-2026-21284
Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79)
8.1
CVSS
0.4%
EPSS
No
On KEV
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 a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a high-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field. A successful attacker can abuse this to achieve session takeover, increasing the confidentiality, and integrity impact to high. Exploitation of this issue requires user interaction in that a victim must browse to the page containing the vulnerable field.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Commerce · Adobe
through 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 · source: vendor, NVD
AC
Adobe Commerce B2B · Adobe
through 1.5.3-alpha3, 1.5.2-p3, 1.4.2-p8, 1.3.5-p13, 1.3.4-p15, 1.3.3-p16 · source: vendor
CB
Commerce B2b · Adobe
before 1.3.3; 1.3.3; 1.3.3; 1.3.3; 1.3.3; 1.3.3; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21284
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21284
Vendor Advisory
https://helpx.adobe.com/security/products/magento/apsb26-05.html
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