CVE-2025-53692

Vulnerability

Overview

CVE-2025-53692 is a stored cross-site scripting (XSS) vulnerability affecting Sitecore Experience Manager (XM) and Experience Platform (XP) versions 9. The root cause is improper neutralization of user-supplied input during web page generation, which allows an attacker to inject malicious scripts into pages that are later served to other users [1]. This issue impacts versions from 9.2 through 10.4 of both products.

Exploitation

An attacker with the ability to submit content or data to a vulnerable Sitecore instance can craft input containing JavaScript or other executable code. Because the application fails to sanitize or encode this input before rendering it in a web page, the injected script executes in the context of the victim's browser session. No authentication is required beyond the ability to submit the malicious payload, and the attack can be performed remotely over the network.

Impact

Successful exploitation enables the attacker to perform actions on behalf of the victim, such as stealing session cookies, redirecting to malicious sites, or modifying page content. This can lead to account takeover, data theft, or further compromise of the Sitecore environment. The CVSS v3 base score of 7.1 (High) reflects the potential for significant confidentiality and integrity impact without requiring high privileges.

Mitigation

Mitigation

Sitecore has not yet released a patch for this vulnerability at the time of publication. Users should monitor vendor advisories and apply updates as soon as they become available. In the interim, organizations can reduce risk by implementing web application firewall rules that filter common XSS patterns and by restricting content submission privileges to trusted users only.