Secure Custom Fields < 6.9.4 - Unauthenticated Post Modification via Front-End Form ID Substitution
Priority LOW 17CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.
Summary
The Secure Custom Fields WordPress plugin before 6.9.4 does not properly verify that a front-end form submission corresponds to the form that was rendered to the visitor, allowing unauthenticated users to submit against a different registered form and modify the title and content of the post that form is bound to.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00266 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Secure Custom Fields (Unknown): 6.9.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 | Secure Custom Fields | before 6.9.4 | 6.9.4 | Patch available | CNA |
- Secure Custom Fields VendorUnknown Affected before 6.9.4 Fixed in 6.9.4 Patch available CNA
Remediation
- Fix · CNA Secure Custom Fields (Unknown) Fixed in 6.9.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-92403
- 2026-10-03 Alias added: GHSA-6w7q-74cq-4m3f
References
Sources
- CVE-2026-92403 · CVE Program
- CVE-2026-92403 · NVD
- FIRST EPSS
- GHSA-6w7q-74cq-4m3f · GitHub Advisory Database · CC BY 4.0
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