EUVD-2026-19780
GHSA-67cg-cpj7-qgc9
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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
Lifecycle Timeline
4DescriptionGitHub Advisory
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.1, the resourceGetHandler in http/resource.go returns full text file content without checking the Perm.Download permission flag. All three other content-serving endpoints (/api/raw, /api/preview, /api/subtitle) correctly verify this permission before serving content. A user with download: false can read any text file within their scope through two bypass paths. This vulnerability is fixed in 2.63.1.
AnalysisAI
File Browser versions prior to 2.63.1 allow authenticated users with download permission disabled to bypass access controls and read arbitrary text file content through the resourceGetHandler endpoint in http/resource.go, which fails to validate the Perm.Download permission flag unlike three other content-serving endpoints that correctly enforce this check. This authentication bypass affects any File Browser deployment where users are granted access but restricted from downloading files, and is fixed in version 2.63.1.
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Vulnerability AssessmentAI
| Risk Assessment | This vulnerability presents moderate real-world risk despite its low CVSS score of 5.3. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated user with legitimate access to File Browser but with their download permission flag explicitly disabled by an administrator (download: false) can craft requests to the resourceGetHandler endpoint to retrieve and read the full text content of files within their authorized directory scope. For example, a contractor granted read-only access to a project directory for reference purposes, but restricted from downloading files to maintain compliance logging, could bypass this restriction by directly requesting file content through the vulnerable endpoint. … |
| Remediation | Vendor-released patch: File Browser 2.63.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
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