---
title: "CVE-2023-45146: XXL-RPC Deserialization of Untrusted Data vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-45146/
description: "CVE-2023-45146 (com.xuxueli:xxl-rpc-core (Maven)): XXL-RPC is a high performance, distributed RPC framework. With it, a TCP server can be set up using the…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-10-18
date_modified: 2024-08-29
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-45146"
kev: false
cvss: 9.5
epss: 0.01255
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-45146: XXL-RPC Deserialization of Untrusted Data vulnerability

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.3% , percentile 69: FIRST’s model estimates a 1.3% chance of exploitation activity in the next 30 days, higher than 69% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes com.xuxueli:xxl-rpc-core (Maven) <= 1.7.0, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

XXL-RPC is a high performance, distributed RPC framework. With it, a TCP server can be set up using the Netty framework and the Hessian serialization mechanism. When such a configuration is used, attackers may be able to connect to the server and provide malicious serialized objects that, once deserialized, force it to execute arbitrary code. This can be abused to take control of the machine the server is running by way of remote code execution. This issue has not been fixed.

## Affected packages

- Maven `com.xuxueli:xxl-rpc-core` <= 1.7.0 → fixed: none listed

## Affected products (CVE record)

- xuexueli xxl-rpc: <= 1.7.0

## Severity

- GitHub_M CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 4.0: 9.5 `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.26% probability of exploitation activity in the next 30 days; percentile 69.

## Sources

- [GitHub Advisory GHSA-f984-3wx8-grp9](https://github.com/advisories/GHSA-f984-3wx8-grp9)
- [CVE.org record CVE-2023-45146](https://www.cve.org/CVERecord?id=CVE-2023-45146)
- [NVD entry CVE-2023-45146](https://nvd.nist.gov/vuln/detail/CVE-2023-45146)
- [securitylab.github.com](https://securitylab.github.com/advisories/GHSL-2023-052_XXL-RPC/)
- [vicarius.io](https://www.vicarius.io/vsociety/posts/xxl-rpc-rce-cve-2023-45146)
- [github.com](https://github.com/xuxueli/xxl-rpc/blob/eeaa1bd7fc8f2249de13f971dda4f6689d66f318/xxl-rpc-core/src/main/java/com/xxl/rpc/core/serialize/impl/HessianSerializer.java#L45)

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Source page: https://erroneo.us/security/cve/CVE-2023-45146/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt