Vulnerability · Published Apr 1, 2026 · Assigned by GitHub_M
CVE-2026-34529File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file
High 7.6
In plain English
A high-severity cross-site scripting in filebrowser from filebrowser. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to version 2.62.2, the EPUB preview function in File Browser is vulnerable to Stored Cross-Site Scripting (XSS). JavaScript embedded in a crafted EPUB file executes in the victim's browser when they preview the file. This issue has been patched in version 2.62.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/filebrowser/filebrowser | no fix listed | GO-2026-5156 |
| Go | github.com/filebrowser/filebrowser/v2 | 2.62.2 | GHSA-5vpr-4fgw-f69h |
| Go | github.com/filebrowser/filebrowser/v2 | 2.62.2 | GO-2026-5156 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | < 2.62.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
References
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5vpr-4fgw-f69h x_refsource_CONFIRM
- https://github.com/filebrowser/filebrowser/releases/tag/v2.62.2 x_refsource_MISC