Adobe Commerce up to 2.4.9-alpha3 cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in Adobe Commerce up to 2.4.9-alpha3. The impacted element is an unknown function. The manipulation leads to cross site scripting. This vulnerability is documented as CVE-2026-21284. The attack can be initiated remotely. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Adobe Commerce up to 2.4.9-alpha3. This issue affects an unknown code. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at helpx.adobe.com. The identification of this vulnerability is CVE-2026-21284 since 12/12/2025. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation needs additional levels of successful authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• E-Commerce Management Software

Vendor

• Adobe

Name

• Commerce

Version

• 2.4.4-p16
• 2.4.5-p15
• 2.4.6-p13
• 2.4.7-p8
• 2.4.8-p3
• 2.4.9-alpha3

License

• commercial

Website

• Vendor: https://www.adobe.com/

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