Persistent XSS vulnerability in filename of attached file in PrivateBin
Published Jan 23, 2020 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Persistent XSS vulnerability in filename of attached file in PrivateBin
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
On 24th of December 2019 one of the [property based unit tests](https://github.com/PrivateBin/PrivateBin/blob/master/tst/README.md#property-based-unit-testing) reported a [failure](https://travis-ci.org/PrivateBin/PrivateBin/jobs/629180605#L782). Upon investigation, [@elrido](https://github.com/elrido) discovered that the failure was due to unescaped HTML, which allowed the user provided attachment file name to inject HTML under certain conditions leading to a persistent [Cross-site scripting (XSS)](https://en.wikipedia.org/wiki/Cross-site_scripting) vulnerability. After committing an [initial fix](https://github.com/PrivateBin/PrivateBin/commit/8d0ac336d23cd8c98e71d5f21cdadcae9c8a26e6) to the master branch, the [issue was reported](https://github.com/PrivateBin/PrivateBin/issues/554) on 25th of December. Vulnerability write-up done by [@rugk](https://github.com/rugk) and [@elrido](https://github.com/elrido). The vulnerability has been fixed in [PrivateBin v1.3.2 & v1.2.2](https://privatebin.info/news/v1.3.2-v1.2.2-release.html). Admins are urged to upgrade to these versions to protect the affected users.
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 Jan 23, 2020 · Last refreshed Nov 3, 2026