CVE-2026-21290: Adobe Commerce | Cross-site Scripting (Stored XSS) (CWE-79)
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21290?
CVE-2026-21290 is categorized as a stored Cross-Site Scripting (XSS) vulnerability affecting low-privileged users.
How do I fix CVE-2026-21290?
To fix CVE-2026-21290, upgrade Adobe Commerce to versions 2.4.9-alpha4, 2.4.8-p4, or later.
What are the affected versions in CVE-2026-21290?
CVE-2026-21290 affects Adobe Commerce versions 2.4.9-alpha3 and earlier, including versions 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16, and earlier.
Who can exploit CVE-2026-21290?
CVE-2026-21290 can be exploited by low-privileged attackers to inject malicious scripts into the application.
What is the impact of CVE-2026-21290 on Adobe Commerce?
The impact of CVE-2026-21290 may allow an attacker to run arbitrary scripts in the context of the victim's browser, potentially leading to data theft or account compromise.