ReactPress <= 3.4.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'permalink' Parameter
Published Sep 30, 2026 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
ReactPress <= 3.4.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'permalink' Parameter
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The ReactPress – Create React App for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'permalink' parameter in all versions up to, and including, 3.4.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the permalink parameter is only passed through sanitize_url(), which does not prevent fetching attacker-controlled remote URLs whose response body — including script tags and event-handler attributes — is written verbatim to disk via file_put_contents().
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- www.wordfence.com ↗
- plugins.trac.wordpress.org ↗
- plugins.trac.wordpress.org ↗
- plugins.trac.wordpress.org ↗
- plugins.trac.wordpress.org ↗
Record history
Published Sep 30, 2026 · Last refreshed Oct 23, 2026