CVE-2026-76201 in Commerce
Summary
by MITRE • 09/09/2026
Adobe Commerce is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an 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, potentially gaining elevated access or control over the victim's account or session. Scope is changed.
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Analysis
by VulDB Data Team • 09/09/2026
Adobe Commerce contains a stored Cross-Site Scripting vulnerability within its form handling mechanisms that allows attackers to inject malicious JavaScript code into persistent data fields. Unlike reflected XSS where the payload is delivered via a URL parameter, this flaw involves input validation failures in server-side processing of user-supplied data submitted through web forms. When an attacker successfully submits crafted content containing executable script tags or event handlers, the application fails to properly sanitize or encode these inputs before storing them in its backend database. Consequently, when any authorized user subsequently views a page that renders this stored content, the browser interprets and executes the injected code as if it were part of the legitimate webpage structure. This persistence distinguishes the threat from transient attacks, enabling long-term compromise without requiring repeated exploitation attempts for each victim interaction.
The operational impact of this vulnerability is severe due to its potential for widespread account takeover and session hijacking. Because the malicious script executes in the context of a trusted domain within the victim's browser, it inherits all cookies, local storage data, and authentication tokens associated with that session. An attacker can leverage this access to perform actions on behalf of the compromised user, such as modifying customer profiles, altering order details, or accessing sensitive business intelligence reports embedded in the commerce platform. In enterprise environments where multiple administrators manage different aspects of the store, gaining control over a single account may provide lateral movement opportunities toward higher-privilege roles like super admins. The scope expansion noted indicates that previous versions might have had more limited impact areas, but this update confirms broader exposure across various form-based interactions within the application interface.
From a technical classification perspective, this vulnerability aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. Specifically, it falls under stored XSS variants where untrusted data is retrieved from a data source and used within web pages without adequate validation or encoding. The attack vector typically involves social engineering tactics to trick users into submitting malicious payloads through seemingly legitimate forms, such as customer reviews, address updates, or support ticket submissions. Once executed, the script can interact with the Document Object Model to steal session identifiers via document.cookie access, redirect users to phishing sites mimicking the login page, or even initiate fraudulent transactions by manipulating form fields before submission. The persistence of this data means that every user viewing the affected content becomes a potential victim until the malicious entry is manually removed from the database.
Mitigation strategies must address both immediate remediation and long-term defensive posture improvements. Administrators should immediately apply the latest security patches provided by Adobe Commerce to close the input validation gaps in form processing modules. Additionally, implementing Content Security Policy headers can significantly reduce the impact of successful XSS attacks by restricting script execution sources and preventing inline scripts from running unless explicitly whitelisted. Input sanitization libraries that enforce strict allow-listing for permitted characters should be integrated into all user-facing forms to prevent malicious payloads from entering the system in the first place. Regular security audits focusing on data flow analysis will help identify other potential injection points across the application architecture. Training development teams on secure coding practices and conducting penetration testing against form submissions are essential steps to maintain resilience against evolving web-based threats targeting e-commerce platforms.