The vulnerability CVE-2025-28880 affects jotis Blue Captcha (<= 1.7.4) and involves improper neutralization of input during web page generation, resulting in a reflected cross-site scripting (XSS) flaw. This allows attackers to inject malicious scripts that execute when a user interacts with crafted URLs or inputs, potentially leading to partial compromise of confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low to low impacts on confidentiality, integrity, and availability. There is no vendor-provided patch or advisory detailing remediation at this time.

Successful exploitation of this reflected XSS vulnerability can allow attackers to execute arbitrary scripts in the context of the affected web application, potentially leading to theft of user credentials, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability to a limited extent. The CVSS vector indicates partial impact on all three security properties. No known exploits are reported in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider implementing web application firewall (WAF) rules to detect and block reflected XSS attempts and avoid exposing vulnerable versions publicly. Monitor official jotis communications for updates and apply patches promptly once available.