# CVE-2026-30934: FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse)

Source: https://junglewise.ai/threats/cve-2026-30934-filebrowser-quantum-stored-xss-in-public-share-page-via  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-11  
License: CC BY 4.0 with a link back

CVE-2026-30934 · Severity: low · CVSS 3.1 · Published 2026-03-11

FileBrowser Quantum: Stored XSS in public share page via unsanitized share metadata (text/template misuse) in github.com/gtsteffaniak/filebrowser

Technologies: [github.com/gtsteffaniak/filebrowser (Go)](https://junglewise.ai/threats/technologies/github-com-gtsteffaniak-filebrowser). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-30934 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-30934 being exploited in the wild.

**How severe is CVE-2026-30934?** Low severity, with a CVSS score of 3.1, published 11 March 2026.

**Which products and versions are affected?** github.com/gtsteffaniak/filebrowser (Go) SEMVER:introduced=0,fixed=0.0.0-20260307130210-09713b32a5f6.

**Is there a fix for CVE-2026-30934?** Yes. github.com/gtsteffaniak/filebrowser (Go): upgrade to 0.0.0-20260307130210-09713b32a5f6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-30934?** Check whether you run github.com/gtsteffaniak/filebrowser (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/gtsteffaniak/filebrowser (Go): upgrade to 0.0.0-20260307130210-09713b32a5f6 or later

  ```sh
  go get github.com/gtsteffaniak/filebrowser@v0.0.0-20260307130210-09713b32a5f6
  ```


## Affected products

- github.com/gtsteffaniak/filebrowser (Go) SEMVER:introduced=0,fixed=0.0.0-20260307130210-09713b32a5f6

## Identifiers

- CVE-2026-30934
- GHSA-r633-fcgp-m532
- GO-2026-4660

## Related threats

- [FileBrowser Quantum information disclosure to unauthenticated users](https://junglewise.ai/threats/cve-2026-46410-filebrowser-quantum-information-disclosure-to-unauthenticated)
- [GO-2026-5776 - FileBrowser: Missing Rate Limiting on Authentication Endpoint Enables Brute Force Attacks in…](https://junglewise.ai/threats/go-2026-5776-filebrowser-missing-rate-limiting-on-authentication-b2b87eb2)
- [GO-2026-5511 - FileBrowser Vulnerable to Stored XSS via SVG File in Public Share (Missing CSP Header) in…](https://junglewise.ai/threats/go-2026-5511-filebrowser-vulnerable-to-stored-xss-via-svg-file-in-f1d3c87e)
- [gtsteffaniak FileBrowser missing rate limiting in login endpoint](https://junglewise.ai/threats/gtsteffaniak-filebrowser-missing-rate-limiting-in-login-endpoint-ae00b83e)
- [gtsteffaniak FileBrowser Quantum path traversal in public share delete](https://junglewise.ai/threats/cve-2026-44542-gtsteffaniak-filebrowser-quantum-path-traversal-in-public-share)