The WP Posts Carousel plugin for WordPress, developed by teastudio.pl, contains a stored cross-site scripting vulnerability identified as CVE-2025-39573. This vulnerability is due to improper input neutralization during web page generation, which can allow an attacker with low privileges to inject malicious scripts that execute when other users view the affected content. The issue affects all versions up to 1.3.10. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, user interaction required, and a scope change, with limited impact on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected site, potentially leading to limited disclosure of information, modification of content, or disruption of availability. However, exploitation requires user interaction and low privileges, which reduces the overall risk. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling or removing the WP Posts Carousel plugin if feasible, or applying any available temporary mitigations recommended by the vendor. Monitor for updates from teastudio.pl regarding patches or official advisories.