CVE-2025-26747 is a stored cross-site scripting vulnerability in the 99colorthemes RainbowNews product, affecting versions up to 1.0.7. The issue is caused by improper neutralization of input during web page generation, which allows an attacker with some privileges to inject malicious scripts that execute in the context of other users' browsers. The vulnerability has a CVSS 3.1 score of 6.5, reflecting medium severity with network attack vector, low complexity, requiring privileges and user interaction, and partial impact on confidentiality, integrity, and availability. There is no vendor-provided patch or official remediation guidance available at this time, and no known exploits have been reported in the wild.

Successful exploitation of this stored XSS vulnerability can lead to limited compromise of confidentiality, integrity, and availability of affected systems or user data. Attackers with some privileges can inject malicious scripts that execute in other users' browsers, potentially leading to session hijacking, unauthorized actions, or information disclosure. However, exploitation requires user interaction and some level of privilege, reducing the overall risk. No active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should limit privileges to trusted users, apply input validation or output encoding where possible, and monitor for suspicious activity related to script injection. Avoid interacting with untrusted content within the application. Follow vendor updates closely for any forthcoming patches or official mitigations.