The vulnerability CVE-2025-39508 in NasaTheme Nasa Core (versions <= 6.4.4) is a reflected cross-site scripting (XSS) issue caused by improper input neutralization during web page generation. This allows attackers to inject malicious scripts that execute when a victim accesses a crafted URL or page, 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 impacts on confidentiality, integrity, and availability. No patch or vendor advisory is currently available to confirm remediation status.

Successful exploitation of this vulnerability can allow an attacker to execute arbitrary scripts in the context of a victim's browser, potentially leading to theft of sensitive information, session hijacking, or other malicious actions affecting confidentiality, integrity, and availability to a limited extent. The CVSS vector indicates partial impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution when interacting with untrusted input or URLs related to Nasa Core. Monitor vendor channels for updates and apply patches promptly once released.