Strong Testimonials: Stored XSS through testimonial photo metadata

The Strong Testimonials plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'platform_user_photo' Custom Field in all versions up to, and including, 3.3.11 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. Exploitation requires that an administrator has added custom text fields named 'platform' and 'platform_user_photo' to a public testimonial submission form, as the plugin does not reserve those internal metadata keys.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Strong Testimonials
Plugin slug: strong-testimonials
Affected: <= 3.3.11
Safe version: See mitigation notes
Published: Oct 03, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Oct 03, 2026 and is one of 21 known issues for this plugin.

What to do

Update, patch or deactivate.

This archive could not verify a fixed version from the official author release notes reviewed on 2026-10-13. Disable the affected feature or component where practical until remediation for the deployed configuration is established. Disable the affected feature or component until a fixed release is verified. An application-level fix should reserve platform and platform_user_photo metadata keys so public text fields cannot overwrite them, validate image URLs, and escape them at output. Until updated, remove these custom fields from public forms. Official author release notes: https://wordpress.org/plugins/strong-testimonials/.

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.

Source record

Technical description

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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