01 Record

CVE-2026-77763

JuiceFS Local Filestore Backend Joins Object Keys onto the Storage Root Without a Containment Check, Allowing Writes Outside the Configured Directory

HighPUBLISHEDCNA: VulnCheck

Base score7.1 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

02 Description

JuiceFS Local Filestore Backend Joins Object Keys onto the Storage Root Without a Containment Check, Allowing Writes Outside the Configured Directory

Published

2026-08-21 11:05Z14 HR AGO

Last updated

2026-08-21 21:44Z3 HR AGO

Reserved

2026-08-21

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base

SSVC decision

ExploitationnoneAutomatablenoTechnical Impactpartial

Data version

5.2

Document digest

e0d647c7f482b6460e12314d062798d49c0379d324082bec8396c6ebb52aa25e

VendorProductVersionsPlatforms

juicedatajuicefs0 to 1.4.1—

github.comGitHub Issue #7401https://github.com/juicedata/juicefs/issues/7401issue-tracking
github.comobject/file: reject object keys that escape the filestore root (#7425)https://github.com/juicedata/juicefs/commit/0bcd70b3d13088d38127d6fb5750c91be7c4ec16patch
github.comGitHub Pull Request #7425https://github.com/juicedata/juicefs/pull/7425issue-tracking
github.comfilestore path() without a containment check at v1.4.1https://github.com/juicedata/juicefs/blob/v1.4.1/pkg/object/file.gotechnical-description
github.comhttps://github.com/juicedata/juicefsproduct
www.vulncheck.comVulnCheck Advisory: JuiceFS Local Filestore Backend Joins Object Keys onto the Storage Root Without a Containment Check, Allowing Writes Outside the Configured Directoryhttps://www.vulncheck.com/advisories/juicefs-local-filestore-backend-joins-object-keys-onto-the-storage-root-without-a-containment-check-allowing-writes-outside-the-configured-directorythird-party-advisory