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CVE-2026-25890

27
FAUCET Score

CVE-2026-25890 is a high-severity vulnerability affecting File Browser versions prior to 2.57.1, allowing authenticated users to bypass file path restrictions. By manipulating the request URL with multiple slashes, attackers can gain unauthorized access to restricted files, leading to potential compromise of confidentiality and integrity. The CVSS score of 8.1 indicates a high risk, with a network attack vector and low complexity. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.57.1CPE matchmatch criteria
cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 26th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/filebrowser/filebrowser/v2Fixed in: 2.57.1

Vendor Advisories (1)

goGHSA-4mh3-h929-w968high

File Browser has a Path-Based Access Control Bypass via Multiple Leading Slashes in URL

Feb 10, 2026

References

github.com / filebrowser/filebrowser/commit/489af403a19057f6b6b4b1dc0e48cbb26a202ef9
Patch
github.com / filebrowser/filebrowser/releases/tag/v2.57.1
ProductRelease Notes
github.com / filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968
ExploitVendor Advisory