# Enable SVG, WebP & ICO Upload <= 1.1.5 - Authenticated (Author+) Stored Cross-Site Scripting via SVG File Upload

- **ID:** WPSEC-2026-1678
- **Plugin:** Enable SVG, WebP, and ICO Upload (`enable-svg-webp-ico-upload`), https://wordpress.org/plugins/enable-svg-webp-ico-upload/
- **Affected versions:** all versions before 1.1.6
- **Fixed in:** 1.1.6 (Update to 1.1.6 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 None seen (as of 2026-10-27)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/enable-svg-webp-ico-upload
- **Fix released:** 2026-10-25
- **Published:** 2026-10-26
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1678/

## Description

The Enable SVG, WebP, and ICO Upload plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file uploads in all versions up to, and including, 1.1.5. This is due to insufficient sanitization. The SVG sanitizer ran only when a file's content was detected as SVG, so a .svg file with non-SVG markup (for example an XHTML document) was stored unsanitized. The sanitizer was also attached only to the wp_handle_upload_prefilter hook, so files uploaded through wp_handle_sideload (for example a raw-body upload to the REST API media endpoint) were never sanitized. This makes it possible for authenticated attackers, with Author-level access and above, to upload malicious SVG files that execute arbitrary web scripts whenever a user accesses the uploaded file.

## References

- https://wpsec.com/vuln/WPSEC-2026-1678/
- https://plugins.svn.wordpress.org/enable-svg-webp-ico-upload/tags/1.1.6/
- https://wordpress.org/plugins/enable-svg-webp-ico-upload/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1678/

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.