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Vulnerabilities

Vulnerability · CVE-2023-42442

fit2cloud jumpserver Improper Authentication

Published Sep 15, 2023 · catalog updated Oct 29, 2026 · fit2cloud jumpserver Improper Authentication

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Patch now

CVE-2023-42442 is in the CISA known-exploited catalog. Confirm fit2cloud jumpserver Improper Authentication against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (fit2cloud jumpserver Improper Authentication).

Same product and reporting

Severity
Medium5.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
63.03%
Remediation
Remediation guidance
Affected products
cpe fit2cloud/jumpserver · vendor fit2cloud jumpserver

JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not affected. The api permission control is broken and can be accessed anonymously. SessionViewSet permission classes set to , relation is or, so any permission matched will be allowed. Versions 3.5.5 and 3.6.4 have a fix. After upgrading, visit the api . The expected http response code is 401 ( ). VulnCheck canary evidence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fit2cloud/jumpserver< 3.5.5
  • cpe fit2cloud/jumpserver< 3.6.4
  • vendor fit2cloud jumpserverversion unspecified

How to fix CVE-2023-42442

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-42442 is in the CISA known-exploited catalog. Confirm fit2cloud jumpserver Improper Authentication against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with < 3.5.5, < 3.6.4. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-287: Improper Authentication. EPSS 63.03%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 29, 2026 · VulnCheck KEV

    Detected

    JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not affected. The api permission control is broken and can be accessed anonymously. SessionViewSet permission

  2. Oct 29, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2023-42442

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2023-42442

    JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud st

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2023-42442

    JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud st

    vulncheck.com

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • VulnCheck KEVNov 1, 2026
  • CVE.orgOct 29, 2026
  • NIST NVDOct 29, 2026