PatchTheCVECVE-2024-9428: The Popup Builder WordPress plugin before 4.3.5 does not sanitise and escape some of its settings, which coul
CVE-2024-9428 is a medium-severity flaw (CVSS 4.8) affecting popup builder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Popup Builder WordPress plugin before 4.3.5 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.8 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 72%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2024-12-12 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-9428?
popup builder: upgrade to 4.3.5. Exact commands for each OS are on this page.
Is CVE-2024-9428 being exploited?
CVE-2024-9428 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2024-9428 affect?
CVE-2024-9428 affects popup builder. Severity is medium (CVSS 4.8). The Popup Builder WordPress plugin before 4.3.5 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability
How urgent is CVE-2024-9428?
Priority 29/100. Public exploit reference
Software pages
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