Auth bypass in Fit2cloud Jumpserver
CVE-2025-62795
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v3.10.21-lts and v4.10.12-lts, a low-privileged authenticated user can invoke LDAP configuration tests and start LDAP synchronization by sending crafted messages to the /ws/ldap/ WebSocket endpoint, bypassing authorization checks and potentially exposing LDAP credentials or causing unintended sync operations. This vulnerability is fixed in v3.10.21-lts and v4.10.12-lts.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Fit2cloud Jumpserver
- Jumpserver — versions < 3.10.21-lts, >= 4.0.0, < 4.10.12-lts
Weakness classification (CWE)
References
- github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822 (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-62795?
- CVE-2025-62795 is a high-severity vulnerability in Fit2cloud Jumpserver, classified under Incorrect Authorization. CVSS score: 7.1/10. Published 2025-10-30.
- How severe is CVE-2025-62795?
- High severity. CVSS v3 base score is 7.1 out of 10.