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CVE-2026-21290
March 11, 2026
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 low-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.
Affected Packages
magento/community-edition (PHP):
Affected version(s) >=2.4.5-p1 <2.4.5-p16
Fix Suggestion:
Update to version 2.4.5-p16
magento/community-edition (PHP):
Affected version(s) >=2.4.7-p1 <2.4.7-p9
Fix Suggestion:
Update to version 2.4.7-p9
magento/community-edition (PHP):
Affected version(s) >=2.4.9-alpha1 <2.4.9-beta1
Fix Suggestion:
Update to version 2.4.9-beta1
magento/community-edition (PHP):
Affected version(s) >=2.4.4-p1 <2.4.4-p17
Fix Suggestion:
Update to version 2.4.4-p17
magento/community-edition (PHP):
Affected version(s) >=2.4.6-p1 <2.4.6-p14
Fix Suggestion:
Update to version 2.4.6-p14
magento/community-edition (PHP):
Affected version(s) >=2.4.8-p1 <2.4.8-p4
Fix Suggestion:
Update to version 2.4.8-p4
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS
Base Score:
0.04