PrivateBin is missing HTML sanitization of attached filename in file size hint
Published Oct 28, 2025 · Updated Oct 24, 2026 · Also known as GHSA-867c-p784-5q6g
Original summary
Normalized public record · Updated Oct 24, 2026
PrivateBin is missing HTML sanitization of attached filename in file size hint
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
We’ve identified an HTML injection/XSS vulnerability in PrivateBin service that allows the injection of arbitrary HTML markup via the attached filename. Below are the technical details, PoC, reproduction steps, impact, and mitigation recommendations.
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
- GHSA-867c-p784-5q6g
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Oct 28, 2025 · Last refreshed Oct 24, 2026