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.

CVSS v3.1

8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

CVSS v3.1

7.0 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

EPSS

5.40% chance of exploitation in the next 30 days, 92th percentile

Published

2023-09-26

Updated

2024-09-23

Proof-of-concept exploits (4)

• C1ph3rX13/CVE-2023-4282056★ · 2024-04-03
• Startr4ck/cve-2023-428202★ · 2023-10-12
• tarihub/blackjump275★ · 2025-06-06
• tarimoe/blackjump275★ · 2025-06-06

Vulhub environments (1)

• vulhub/vulhub/tree/master/jumpserver/CVE-2023-42820

References

• CVE Record
• NVD entry

Related

• CVE-2023-22515
• CVE-2023-22518
• CVE-2023-22527
• CVE-2023-23752
• CVE-2023-28432
• CVE-2023-42442