CVE-2023-42820

highpriority · attend · 45EPSS 0.063 · 94 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

6.30% (94th) EPSS

CVSS 8.2 · high

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 4.2

v3.17highAV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Lsecondary · FSTEC (BDU) RU

v3.17highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Lsecondary · ENISA EU

v3.17highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:Lsecondary · security-advisories@github.comexploitability 2.2 · impact 4.7

v3.17.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USCWE-200USCWE-284USCWE-94US

exploits (1)

Public proof-of-concept and weaponised exploit code.

C1ph3rX13/CVE-2023-42820CVE-2023-42820PoC · poc_in_github

affected products (6)

Products and version ranges known to be affected.

jumpserver jumpserver2.24, → 2.28.19enisa_euvdEU
jumpserver jumpserver3.0.0, → 3.6.5enisa_euvdEU
Hangzhou Feizhiyun Information Technology Co., Ltd. JumpServer2.24.0 → 2.28.19fstec_bduRU
Hangzhou Feizhiyun Information Technology Co., Ltd. JumpServer3.0.0 → 3.6.5fstec_bduRU
fit2cloud jumpserver2.24.0 → 2.28.19nvdUScpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*
fit2cloud jumpserver3.0.0 → 3.6.5nvdUScpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2023-09-27modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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