CVE-2025-13617 is a stored cross-site scripting vulnerability in the Apollo13 Framework Extensions WordPress plugin affecting all versions up to 1.9.8. The vulnerability is due to improper neutralization of input in the 'a13_alt_link' parameter, allowing authenticated users with Contributor or higher privileges to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability has a CVSS 3.1 base score of 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial impact on confidentiality and integrity.

An attacker with Contributor-level or higher access can exploit this vulnerability to inject persistent malicious scripts into pages, which execute when viewed by other users. This can lead to partial confidentiality and integrity impacts, such as theft of user credentials or unauthorized actions performed on behalf of users. There is no impact on availability reported. No known exploits are currently observed in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level access to trusted users only and consider applying additional input validation or output escaping controls if possible. Monitor official channels from apollo13themes for updates or patches addressing this vulnerability.