CVE-2026-57737 describes a DOM-based Cross-site Scripting (XSS) vulnerability in the Averta LTD Shortcodes and extra features for Phlox theme. The issue arises from improper neutralization of input during web page generation, which can lead to script injection in the DOM. This affects all versions up to and including 2.17.16. The vulnerability has a CVSS 3.1 base score of 6.5 with vector AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L, indicating network attack vector, low attack complexity, requires low privileges and user interaction, with a scope change and impacts on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available.

Successful exploitation of this vulnerability could allow an attacker with low privileges and requiring user interaction to execute arbitrary scripts in the victim's browser context. This can lead to partial compromise of confidentiality, integrity, and availability of the affected system or user data. The vulnerability affects the web interface generated by the Phlox theme's shortcodes and extra features, potentially impacting users interacting with affected versions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with untrusted input and consider disabling or limiting use of the affected shortcodes and features if possible. Monitor vendor communications for updates regarding patches or official mitigations.