Secuno
ENNL
Book demo

CVE-2025-53826

Filebrowser vulnerability

9.8 CRITICALPublic exploitEPSS 0.53%
  1. Published15 Jul 2025

Description

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename, and edit files. In version 2.39.0, File Browser’s authentication system issues long-lived JWT tokens that remain valid even after the user logs out. As of time of publication, no known patches exist.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Filebrowser2.39.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-783579.1
Previously issued authentication tokens are not immediately invalidated when an OTRS…
CVE-2026-1078088.1
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST…
CVE-2026-1040848.8
SmarterMail before build 9777 contains a privilege escalation vulnerability where JWT…
CVE-2026-1030599.1
When Gitea's built-in SSH server is enabled (`START_SSH_SERVER = true`), the presented…
CVE-2026-1032838.1
Ghost versions 6.20.0 before 6.57.1 contain a session handling vulnerability that…
CVE-2026-940539.1
Authentication bypass via LDAP injection in component sshd-ldap in Apache MINA SSHD…

Frequently asked

Is CVE-2025-53826 being actively exploited?

CVE-2025-53826 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.53%.

How severe is CVE-2025-53826?

CVE-2025-53826 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.53% probability of exploitation.

Which products are affected by CVE-2025-53826?

Affected products include Filebrowser.

How do I fix CVE-2025-53826?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-53826 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.