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CVE-2026-54336

JumpServer: KoKo Web Terminal SFTP Path Traversal on Authorized Asset

Published: Aug 17, 2026Updated: Aug 18, 2026 Sources: CVE List NVDCWE-22
5.4MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 81.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

JumpServer is an open source bastion host and an operation and maintenance security audit system. From 4.8.0 until 4.10.17, an authenticated user with SFTP permission to an authorized asset can submit crafted traversal paths through the KoKo Web Terminal SFTP feature, causing AssetDir.GetRealPath() in pkg/srvconn/sftp_asset.go to resolve paths outside the intended SFTP root and permit read, list, write, rename, or delete operations under the configured backend account on that asset. This issue is fixed in version 4.10.17.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

jumpserver
oss-projectaka jumpserver.org
jumpserverMixed
Security Products / identity-access-mgmt

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vr
github.com
https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12ea
github.com
https://github.com/jumpserver/koko/releases/tag/v4.10.17
github.com

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