404 to Start <= 1.6.1 - Admin+ Stored XSS
Priority MEDIUM 55Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
The 404 to Start WordPress plugin through 1.6.1 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 it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00538 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
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 | 404 to Start | up to 1.6.1 | — | No fix listed | CNA |
- 404 to Start VendorUnknown Affected up to 1.6.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:404_to_start_project:404_to_start:*:*:*:*:*:wordpress:*:* | up to 1.6.1 | Vulnerable | 404 To Start Project |
- cpe:2.3:a:404_to_start_project:404_to_start:*:*:*:*:*:wordpress:*:* Versions up to 1.6.1 Vulnerable ·404 To Start Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-3855
- 2026-10-03 Alias added: GHSA-4r7f-wp49-4mv2
References
Sources
- CVE-2022-3855 · CVE Program
- CVE-2022-3855 · NVD
- FIRST EPSS
- GHSA-4r7f-wp49-4mv2 · 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