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CVE-2025-53826

27
FAUCET Score

CVE-2025-53826 describes a critical authentication bypass vulnerability in File Browser version 2.39.0, where JWT tokens remain valid indefinitely even after user logout. This allows unauthorized access to file management functions, including uploading, deleting, and editing files. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no active exploits, public exploit code, or significant community discussion have been observed, the high FAUCET Risk Score of 87/100 indicates a severe threat.

Impacted Technologies

VendorProductVersion(s)CPE
2.39.0CPE matchmatch criteria
cpe:2.3:a:filebrowser:filebrowser:2.39.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

7.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
HIGH
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 18th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

goGHSA-7xwp-2cpp-p8r7high

File Browser’s insecure JWT handling can lead to session replay attacks after logout

Jul 16, 2025

References

github.com / filebrowser/filebrowser/issues/5216
Issue Tracking
github.com / filebrowser/filebrowser/security/advisories/GHSA-7xwp-2cpp-p8r7
ExploitVendor Advisory