Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exploitation requires an authenticated WordPress account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
- Component
- Blocksy Companion
- Plugin slug
blocksy-companion- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Mar 22, 2024
This CVE was published Mar 22, 2024 and is one of 12 known issues for this plugin.
Update, patch or deactivate.
Update Blocksy Companion 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 Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Newsletter widget in all versions up to, and including, 2.0.31 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
NVD vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N