CVE-2023-42820

Random seed leakage in Jumpserver

HIGH

8.2

CVSS Score

Published: September 26, 2023 at 08:35 PM UTC

Updated: June 17, 2026 at 06:24 AM UTC

2 products affected across 2 vendorsJumpserverJumpserver

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Severity

HIGH8.2

Exploit prediction

EPSS 6%

SSVC

No known exploit

Description

JumpServer is an open source bastion host. This vulnerability is due to exposing the random number seed to the API, potentially allowing the randomly generated verification codes to be replayed, which could lead to password resets. If MFA is enabled users are not affect. Users not using local authentication are also not affected. Users are advised to upgrade to either version 2.28.19 or to 3.6.5. There are no known workarounds or this issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Jumpserver · FIT2CLOUD

95%

2.24.0 ≤ v < 2.28.193.0.0 ≤ v < 3.6.5

Affected range stops below 2.28.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.6.5, so it looks safe — our inference, not a vendor statement

Jumpserver · Jumpserver

60%

v < 2.28.19v < 3.6.5

Affected range stops below 2.28.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.6.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatch

Source: [email protected]

https://github.com/jumpserver/jumpserver/commit/42337f0d00b2a8d45ef063eb5b7deeef81597da5

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7prv-g565-82qp

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200NVD-CWE-noinfo

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