by Kastro
Paper/Archive/CVE-2026-34529

CVE-2026-34529

filebrowser filebrowser — File Browser is vulnerable to Stored Cross-site Scripting via crafted EPUB file

EPSS 0.3%public exploitCVSS 9.0
critical.is priorityof 100
42
CVSS 9.0 (NVD)9.0 / 10 × 3027.0Not in CISA KEV+300.0EPSS percentile 25.8.258 × 205.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
filebrowser< 2.62.2–CNA

Scores by source

NVD9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
GitHub_M (CNA)7.6CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: partial

References

refgithub.com/filebrowser/filebrowser/security/advisories/GHSA-5vpr-4fgw-f69hrefgithub.com/filebrowser/filebrowser/releases/tag/v2.62.2