Random seed leakage in Jumpserver

published 2023-09-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-47242

cvss: 7.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 6.3%; EPSS 6.3% chance of exploitation in 30 days, percentile 93%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 1

fit2cloud jumpserver 2.28.19, 3.6.5

github.com/jumpserver/jumpserver@42337f0 commit

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-09-23)

Exploit prediction

6.30% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
NVD	3.1	8.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Affected products

jumpserver jumpserver

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

CVE List CVE-2023-42820
NVD CVE-2023-42820

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary