Medium severity5.4NVD Advisory· Published Sep 27, 2023· Updated Jun 17, 2026
CVE-2023-42818
CVE-2023-42818
Description
JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.
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Affected products
3>=3.6.5, >=3.5.6+ 1 more
- (no CPE)range: >=3.6.5, >=3.5.6
- (no CPE)range: >= 3.6.0, < 3.6.5
- osv-coordsRange: < 0.0.20250612T141001-1.1
Patches
Vulnerability mechanics
References
2News mentions
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