Home→Vulnerabilities→CVE-2023-42820
Disclosed

CVE-2023-42820

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.

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Exploitation Probability (EPSS)

High Priority
62.79%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

4 events
Sep 27, 2023
Vulnerability Disclosed
Published to component-level vulnerability database.
Sep 29, 2023
Last Updated
Record updated with new analysis or tags.
Jun 11, 2025
EPSS Score Increased
Daily EPSS score increased by 0.257 on 2023-12-30
Nov 19, 2025
EPSS Score Decreased
Daily EPSS score decreased by 0.344 on 2023-12-30

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

Affected Products

1 Total
fit2cloud/jumpserverAll Versions

References

https://github.com/jumpserver/jumpserver/commit/42337f0d00b2a8d45ef063eb5b7deeef81597da5GitHub
Patch
https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7prv-g565-82qpGitHub
Vendor Advisory

Am I Vulnerable?

Check your domain or package.json for CVE-2023-42820 exposure.

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Vulnerability Details

CVSS Base Score
8.2/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Published Date
Sep 27, 2023
Last Modified
Sep 29, 2023
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