CVE-2021-30209
Published Apr 15, 2021 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
Textpattern V4.8.4 contains an arbitrary file upload vulnerability where a plug-in can be loaded in the background without any security verification, which may lead to obtaining system permissions.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Textpattern V4.8.4 contains an arbitrary file upload vulnerability where a plug-in can be loaded in the background without any security verification, which may lead to obtaining system permissions.
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
Record history
Published Apr 15, 2021 · Last refreshed Oct 23, 2026