CVE-2026-21290

high-risk
Published 2026-03-11

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.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.7/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Adobe

References (1)

Vendor Advisory https://helpx.adobe.com/security/products/magento/apsb26-05.html
63
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 0/34 · Minimal
Exposure 33/34 · Critical