vulnerability / NVI-00002737 / Revision 2
PrivateBin vulnerable to malicious filename use for self-XSS / HTML injection locally for users
OSV carries this publisher advisory for privatebin/privatebin. This is an aggregated source copy; consult the original publisher and compare update dates.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
3.9 LOW (3.1)
security-advisories@github.com severity; no combined Null risk score.
5.4 MEDIUM (3.1)
nvd@nist.gov severity; no combined Null risk score.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
privatebin/privatebin
source listedECOSYSTEM: introduced 1.7.7; fixed 2.0.3
## Summary Dragging a file whose filename contains HTML is reflected verbatim into the page via the drag-and-drop helper, so any user who drops a crafted file on PrivateBin will execute arbitrary JavaScript within their own session (self-XSS). This allows an attacker who can entice a victim to drag or otherwise attach such a file to exfiltrate plaintext, encryption keys, or stored pastes before they are encrypted or sent. **Note 1:** as the malicious filename must contain the `>` character, the victim must not be using Windows for this to work, since this OS simply forbids this character in filenames. **Note 2:** most PrivateBin instances use the Content-Security-Policy header to prevent most use-cases of this vulnerability. This report will describe the impact as if this header had been disabled by the PrivateBin instance owner. ## Affected versions PrivateBin versions since 1.7.7 and before 2.0.3. ## Conditions * Only macIOS or Linux users are affected, due to the way the `>` character is treated in a file name on Windows. * The PrivateBIn instance needs to have file upload enabled. * An attacker needs to have access to the local file system or somehow convince the user to
03 / Response
What to do next
- vendor patch
The original advisory lists fixed boundaries 2.0.3 for privatebin/privatebin. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. NIST National Vulnerability Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
- NVD lastModified does not establish freshness of every associated CPE record.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-r9x7-7ggj-fx9f ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
- CVE-2025-64711 ↗
NIST National Vulnerability Database · official catalog
Observed . This product uses data from the NVD API but is not endorsed or certified by the NVD.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 2 ·
Source facts changed; compare the preserved prior revision.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.