5.4

CVE-2026-25889: File Browser has an Authentication Bypass in User Password Update

Analyzed
AliasesGHSA-hxw8-4h9j-hq2rGO-2026-4475
Published 09-02-2026Last modified 10-02-2026

Vulnerability summary

CVE-2026-25889 is a medium (CVSS 5.4) Improper Handling of Case Sensitivity vulnerability in filebrowser. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 30.5% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.37%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:0757-1

Timeline

  1. 09-02-2026
    PublishedVulnerability first disclosed.
  2. 10-02-2026
    Last modifiedVulnerability information updated.

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. Prior to 2.57.1, a case-sensitivity flaw in the password validation logic allows any authenticated user to change their password (or an admin to change any user's password) without providing the current password. By using Title Case field name "Password" instead of lowercase "password" in the API request, the current_password verification is completely bypassed. This enables account takeover if an attacker obtains a valid JWT token through XSS, session hijacking, or other means. This vulnerability is fixed in 2.57.1.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

Decrease -0.04 pp

From 0.41% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Filebrowser

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Filebrowser1 product
Github.com/filebrowser1 product
  • filebrowserAll versions (No fix recorded)
Github.com/filebrowser/filebrowser1 product
  • v2< 2.57.1

3 vendors · 3 products

References

5 links