Form Builder CP < 1.2.47 - Editor+ Stored XSS via form_structure
Priority MEDIUM 58Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
The Form Builder CP WordPress plugin before 1.2.47 does not properly sanitize a form configuration value before storing it and using it as part of a client-side script execution, allowing authenticated users with Editor-level access and above to perform Stored Cross-Site Scripting attacks against any visitor of a page rendering the affected form, even when the `unfiltered_html` capability is disallowed (e.g. in a multisite network).
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00159 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Form Builder CP (Unknown): 1.2.47
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Form Builder CP | before 1.2.47 | 1.2.47 | Patch available | CNA |
- Form Builder CP VendorUnknown Affected before 1.2.47 Fixed in 1.2.47 Patch available CNA
Remediation
- Fix · CNA Form Builder CP (Unknown) Fixed in 1.2.47
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9278
- 2026-10-03 Alias added: GHSA-x9r5-r92q-89hf
References
Sources
- CVE-2026-9278 · CVE Program
- CVE-2026-9278 · NVD
- FIRST EPSS
- GHSA-x9r5-r92q-89hf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences