# Bootstrap Shortcodes <= 3.4.4 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via Bundled Bootstrap Library Data Attributes

- **ID:** WPSEC-2026-1262
- **Plugin:** Bootstrap Shortcodes (`bootstrap-shortcodes`), https://wordpress.org/plugins/bootstrap-shortcodes/
- **Affected versions:** all versions before 3.4.6
- **Fixed in:** 3.4.6 (Update to 3.4.6 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-20)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/bootstrap-shortcodes
- **Fix released:** 2026-10-18
- **Published:** 2026-10-20
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1262/

## Description

The Bootstrap Shortcodes plugin for WordPress is vulnerable to DOM-Based Stored Cross-Site Scripting in all versions up to, and including, 3.4.4 due to bundling an outdated version of the Bootstrap JavaScript library (3.3.5) that passes data-target, data-parent and data-container attribute values to jQuery as HTML and does not sanitize tooltip and popover templates. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts through crafted data-* attributes in post content that will execute whenever a user accesses an injected page.

## References

- https://wpsec.com/vuln/WPSEC-2026-1262/
- https://plugins.svn.wordpress.org/bootstrap-shortcodes/tags/3.4.6/
- https://wordpress.org/plugins/bootstrap-shortcodes/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1262/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.