CVE-2024-31091 is a reflected cross-site scripting vulnerability (CWE-79) in the Custom Field Bulk Editor product by SparkWeb Interactive, Inc. It affects versions up to 1.9.1. The vulnerability occurs due to improper input neutralization during web page generation, enabling attackers to execute arbitrary scripts in the context of the victim's browser. The CVSS 3.1 base score is 7.1 (high), with attack vector network, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability rated low to low/medium.

Successful exploitation of this vulnerability can allow an attacker to execute arbitrary scripts in the context of a user's browser session, potentially leading to information disclosure, modification of data, or disruption of service. The CVSS score reflects a high severity with impacts on confidentiality, integrity, and availability, but no known exploits have been reported in the wild to date.

No official patch or remediation guidance is currently available from the vendor. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should consider applying standard XSS mitigations such as input validation and output encoding where possible, and limit exposure to untrusted input in the affected component.