CVE-2025-26866

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.

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-25)

CWE

CWE-502

Published

2025-12-12

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• apache:hugegraph

Packages (OSV)

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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