CVE-2023-43651
Published: 27 September 2023
Summary
CVE-2023-43651 is a high-severity Code Injection (CWE-94) vulnerability in Fit2Cloud Jumpserver. Its CVSS base score is 8.5 (High).
Operationally, ranked in the top 9.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
JumpServer is an open source bastion host that contains a code injection vulnerability tracked as CVE-2023-43651 and assigned CWE-94. An authenticated user can abuse MongoDB sessions through the WEB CLI interface of the koko component to execute arbitrary commands, resulting in remote code execution that may be escalated to root privileges on the host. The flaw carries a CVSS 3.1 score of 8.5 reflecting network attack vector, high impact on confidentiality, integrity, and availability, and the requirement for low-privileged access.
An attacker who already possesses valid credentials for an authorized MongoDB database can connect via the WEB CLI, hijack the session, and inject commands that run with elevated privileges on the underlying system.
Public advisories from the project maintainers state that the issue is resolved in JumpServer versions 2.28.20 and 3.7.1, recommend immediate upgrade, and note the absence of any workarounds. The referenced GitHub security advisory and SonarSource analysis provide further technical detail on the affected code paths.
EPSS for this CVE rose from lower values to a peak of 0.1392 on 2025-12-11 before receding to the current 0.0588, indicating a clear increase in exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-2648
Vulnerability details
JumpServer is an open source bastion host. An authenticated user can exploit a vulnerability in MongoDB sessions to execute arbitrary commands, leading to remote code execution. This vulnerability may further be leveraged to gain root privileges on the system. Through…
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the WEB CLI interface provided by the koko component, a user logs into the authorized mongoDB database and exploits the MongoDB session to execute arbitrary commands. This vulnerability has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.