What’s Vulnerable › Vulnerabilities

CVE-2025-62795: JumpServer Unauthorized LDAP Configuration Access via WebSocket

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-30 · updated 2026-10-19
• Weakness: CWE-863

Description

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.

Affected products

• jumpserver: before 3.10.21; from 4.0.0 before 4.10.12 — fixed in 3.10.21, 4.10.12

How to fix

Upgrade to a fixed version: jumpserver 3.10.21, 4.10.12. Check the vendor advisory for mitigations.

References

• https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822
• https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7893-256g-m822

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