Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE PRO: Cross-site scripting
Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE PRO is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
- Component
- Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE PRO
- Plugin slug
otter-blocks- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Mar 13, 2024
This CVE was published Mar 13, 2024 and is one of 13 known issues for this plugin.
Update, patch or deactivate.
Update Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE PRO to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE PRO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via file upload form, which allows SVG uploads, in all versions up to, and including, 2.6.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Note that the patch in 2.6.4 allows SVG uploads but the uploaded SVG files are sanitized.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N