What’s Vulnerable › Vulnerabilities

CVE-2025-26866: Apache HugeGraph-Server: RAFT and deserialization vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-12 · updated 2026-10-07
• Weakness: CWE-502

Description

A remote code execution vulnerability exists where a malicious Raft node can exploit insecure Hessian deserialization within the PD store. The fix enforces IP-based authentication to restrict cluster membership and implements a strict class whitelist to harden the Hessian serialization process against object injection attacks. Users are recommended to upgrade to version 1.7.0, which fixes the issue.

Affected products

• Apache Software Foundation Apache HugeGraph-Server: from 1.0.0 before 1.7.0 — fixed in 1.7.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache HugeGraph-Server 1.7.0. Check the vendor advisory for mitigations.

References

• https://github.com/apache/incubator-hugegraph/pull/2735
• https://lists.apache.org/thread/ko8jkwbjbb99m45pg4sgo5xsm8gx9nsq
• http://www.openwall.com/lists/oss-security/2025/12/09/1

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