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CVE-2026-39559 is a HIGH severity vulnerability (CVSS Score: 8.1) affecting Uppercase theme versions prior to 1.2.2. This vulnerability allows unauthenticated local file inclusion. The vulnerability was published on June 17, 2026, and last modified on the same day. Users of affected versions should take immediate action to mitigate potential risks.
The Canvas plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tag' parameter in all versions up to, and including, 2.5.2. This vulnerability is due to insufficient input sanitization and output escaping, making 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.