Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/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:H/AT:N/PR:N/UI:N/VC:N/VI:L/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 Matches() function in rules/rules.go uses strings.HasPrefix() without a trailing directory separator when matching paths against access rules. A rule for /uploads also matches /uploads_backup/, granting or denying access to unintended directories. This vulnerability is fixed in 2.63.1.
AnalysisAI
File Browser versions prior to 2.63.1 contain a path traversal vulnerability in the Matches() function that fails to enforce directory boundaries when evaluating access control rules. An attacker can bypass intended access restrictions by exploiting the use of strings.HasPrefix() without trailing directory separators, allowing a rule intended to restrict access to /uploads to inadvertently grant or deny access to similarly-named directories such as /uploads_backup/. …
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Vulnerability AssessmentAI
| Risk Assessment | The CVSS v4.0 score of 6.3 reflects low-to-moderate severity with a network attack vector, high attack complexity, and low integrity impact (VI:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A File Browser administrator configures an access rule to restrict a sensitive directory: 'deny /sensitive_data'. Due to the vulnerability, a second directory named /sensitive_data_archive/ is also inadvertently denied access. … |
| Remediation | Upgrade File Browser to version 2.63.1 or later, which includes a corrected Matches() function that properly validates directory boundaries. … Detailed patch versions, workarounds, and compensating controls in full report. |
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EUVD-2026-19778
GHSA-5q48-q4fm-g3m6