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TI-2026-39230 Aliases CVE-2026-54336

JumpServer: KoKo Web Terminal SFTP Path Traversal on Authorized Asset

Priority MEDIUM 58CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00341 27th percentileScored 2026-11-07
Fix Fixed jumpserver (jumpserver): 4.10.17

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jumpserverjumpserver4.8.0 to before 4.10.174.10.17Patch availableCNA
  • jumpserver Vendorjumpserver Affected 4.8.0 to before 4.10.17 Fixed in 4.10.17 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*——1Panel-dev
  • cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:* Versions — — ·1Panel-dev

Remediation

  • Fix · CNA jumpserver (jumpserver) Fixed in 4.10.17

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54336

References

Other 3

  • TI-2024-27040 Arbitrary File Read in Ansible Playbooks in Jumpserver CVSS 3.1CRITICAL 10.0
  • TI-2023-23378 Non-MFA account takeover via using only SSH public key to login in jumpserver CVSS 3.1CRITICAL 9.1
  • TI-2023-22607 JumpServer session replays download without authentication CVSS 3.1HIGH 8.2
  • TI-2024-27041 Arbitrary File Write in Ansible Playbooks leads to RCE in Jumpserver CVSS 3.1CRITICAL 10.0
  • TI-2024-19371 JumpServer vulnerable to Jinja2 template injection in Ansible leads to RCE in Celery CVSS 3.1CRITICAL 10.0
  • TI-2024-19370 JumpServer's insecure Ansible playbook validation leads to RCE in Celery CVSS 3.1CRITICAL 10.0
See all 27 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences