CVE-2023-42819: JumpServer is an open source bastion host

This month

HIGH 8.9UPGRADE

CVE-2023-42819 is a high-severity flaw (CVSS 8.9) affecting jumpserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

JumpServer is an open source bastion host. Logged-in users can access and modify the contents of any file on the system. A user can use the 'Job-Template' menu and create a playbook named 'test'. Get the playbook id from the detail page, like 'e0adabef-c38f-492d-bd92-832bacc3df5f'. An attacker can exploit the directory traversal flaw using the provided URL to access and retrieve the contents of the file. `https://jumpserver-ip/api/v1/ops/playbook

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.9 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-09-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: fit2cloud

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-27 15:19 UTCPublished CVE record published
2026-06-17 06:24 UTCUpdated Record last modified

fit2cloud jumpserver UPGRADE

Affected: >= 3.0.0 and < 3.6.5

Fixed in: 3.6.5

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy jumpserver || rpm -q jumpserver || jumpserver --version

2. UPGRADE to 3.6.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jumpserver

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jumpserver

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.0.0 (Debian / Ubuntu)

apt-cache madison jumpserver sudo apt install jumpserver=<VERSION_BEFORE_3.0.0> sudo apt-mark hold jumpserver

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jumpserver sudo dnf downgrade jumpserver-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add jumpserver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-42819?

jumpserver: upgrade to 3.6.5. Exact commands for each OS are on this page.

Is CVE-2023-42819 being exploited?

CVE-2023-42819 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-42819 affect?

CVE-2023-42819 affects jumpserver. Severity is high (CVSS 8.9). JumpServer is an open source bastion host. Logged-in users can access and modify the contents of any file on the system. A user can use the 'Job-Template' menu and create a playbook named 'test'. Get the playbook id from the detail page, li

How urgent is CVE-2023-42819?

Priority 52/100. High severity

Related CVEs

CVE-2025-62712 CRITICAL 9.6 UPGRADE JumpServer is an open source bastion host and an operation and maintenance security audit system
CVE-2025-62795 HIGH 7.1 UPGRADE JumpServer is an open source bastion host and an operation and maintenance security audit system
CVE-2023-48193 CRITICAL 9.8 DOWNGRADE Insecure Permissions vulnerability in JumpServer GPLv3 v.3.8.0 allows a remote attacker to execute arbitrary c
CVE-2026-31864 MEDIUM 6.8 UPGRADE JumpServer is an open source bastion host and an operation and maintenance security audit system
CVE-2026-31798 MEDIUM 5.0 UPGRADE JumpServer is an open source bastion host and an operation and maintenance security audit system

References

← Back to latest CVEs