This vulnerability in Progress MOVEit Transfer is classified as CWE-79, involving improper neutralization of input during web page generation, which can lead to cross-site scripting (XSS). The affected versions are those before 2025.1.5 and versions starting from 2026.0.0 up to but not including 2026.0.3. The CVSS v3.1 base score is 7.1, with network attack vector, high attack complexity, low privileges required, and requiring user interaction. The impact includes high confidentiality, integrity, and availability impacts. No official remediation level or patch information is provided in the available data.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to data theft, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but exploitation complexity is high and requires user interaction and low privileges.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor Progress's advisories for updates. Until a patch is available, consider applying any recommended workarounds or input validation controls if provided by the vendor.