Medium 5.4Published Aug 17, 2026

CVE-2026-54336JumpServer: KoKo Web Terminal SFTP Path Traversal on Authorized Asset

Updated under an hour ago (2026-10-19 07:23 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for jumpserver

Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

jumpserver jumpserver jumpserver:jumpserver (from the name)	from 4.8.0, < 4.10.17	CNA record

References

https://github.com/jumpserver/jumpserver/security/advisories/GHSA-x6rg-36j6-76vrx-refsource-confirm
https://github.com/jumpserver/koko/commit/02fabebe27dacce89114fba122c667a946fd12eax-refsource-misc
https://github.com/jumpserver/koko/releases/tag/v4.10.17x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.