Spectra – WordPress Gutenberg Blocks, CVE-2026-12900
- CVE, Research URL
- Application
- Published on
- Jul 21, 2026
- Research Description
- The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `uagb/image` block in all versions up to, and including, 2.19.28 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- Affected versions
-
max 2.19.29.
- Status
-
vulnerable