Gutenberg Blocks, Page Builder – ComboBlocks: Cross-site scripting
Gutenberg Blocks, Page Builder – ComboBlocks is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
- Component
- Gutenberg Blocks, Page Builder – ComboBlocks
- Plugin slug
post-grid- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Aug 01, 2024
This CVE was published Aug 01, 2024 and is one of 29 known issues for this plugin.
Update, patch or deactivate.
No fixed release is identified. Update Gutenberg Blocks, Page Builder – ComboBlocks when a confirmed fixed release becomes available; until then, disable and remove it when the site's risk warrants.
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 Gutenberg Blocks, Page Builder – ComboBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the redirectURL parameter of the Date Countdown widget, in all versions up to, and including, 2.2.85 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
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