CVE-2025-52900: filebrowser Incorrect Default Permissions
Vulnerability summary
CVE-2025-52900 is a medium (CVSS 5.5) Incorrect Default Permissions vulnerability in filebrowser. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 26-06-2025PublishedVulnerability first disclosed.
- 26-06-2025Last 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. The file access permissions for files uploaded to or created from File Browser are never explicitly set by the application. The same is true for the database used by File Browser. On standard servers using File Browser prior to version 2.33.7 where the umask configuration has not been hardened before, this makes all the stated files readable by any operating system account. Version 2.33.7 fixes the issue.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · GoEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
+0.02 pp
From 0.21% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundFilebrowser
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Filebrowser1 product
- filebrowser< 2.33.7
Github.com/filebrowser1 product
- filebrowser≤ 1.11.0 | All versions (No fix recorded)
Github.com/filebrowser/filebrowser1 product
- v2< 2.33.7
3 vendors · 3 products
References
6 links- github.com/filebrowser/filebrowser/security/advisories/GHSA-jj2r-455p-5gvfX Refsource CONFIRMWEBAdvisoryExploitVendor Advisory
- github.com/filebrowser/filebrowser/commit/ca86f916216620365c0f81629c0934ce02574d76X Refsource MISCWEBFIXPatch
