Live › vulnerability › CVE-2026-115457
Go to dashboardbaserCMS expands shortcodes across the whole rendered page, including blog comments posted by anonymous visitors, so a comment containing a BcBaser.getGoogleMaps shortcode can load an attacker-controlled script. The script runs on the site's origin when another visitor or an administrator opens the article, and can act in the administrator's logged-in browser session.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Sites running baserCMS 5.0.0 through 5.3.1 or 5.4.0 through 5.4.1 with the blog comment feature open to visitors are exposed, since anyone can post a comment without logging in. Administrators who view the affected article are the most valuable target because their session can be abused. Sites on patched versions or with blog comments disabled can skip it.
No product ranges from the sources yet.
composer show basercms/basercms or the admin footer; affected versions are 5.0.0 to before 5.3.2 and 5.4.0 to before 5.4.2.BcBaser.getGoogleMaps (unknown whether the sources give a database query).5.3.2 on the 5.3 line or 5.4.2 on the 5.4 line.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
baserCMS is a website development framework. In versions 5.0.0 before 5.3.2 and 5.4.0 before 5.4.2, global shortcode expansion runs over the complete rendered page, including HTML-escaped blog comments supplied by unauthenticated visitors. A comment containing the BcBaser.getGoogleMaps shortcode can set apiBaseUrl to an attacker-controlled script URL, which is emitted as a script src and executes JavaScript on the site's origin when another visitor or administrator opens the article displaying that comment. Escaping raw HTML in comments does not prevent this stored cross-site scripting because shortcode processing happens after HTML rendering. Other registered shortcodes also expand in comments; Mail.getForm can embed a working contact form with a valid CSRF token. The flaw can compromise the authenticated browser context of an administrator who views the affected article. This issue has been patched in versions 5.3.2 and 5.4.2.
This page as .md · .json · in your agent: get_signal("CVE-2026-115457")
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.