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Public proof of concept

CVE-2023-45146

A public proof of concept exists; no exploitation attested.

  • Published2023-10-18
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2023-10-1822:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-45146?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-45146?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Xxl-rpc project xxl-rpc
BranchAffectedFixed in
1.7≤ 1.7.0no fix published
xxl-rpc-core
BranchAffectedFixed in
1.7≤ 1.7.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2024-08-29
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.19read 2026-10-23
  • NVDCVSS 3.110read 2026-10-23
  • CNAweakness (CWE)CWE-502read 2026-10-23
  • NVDweakness (CWE)CWE-502read 2026-10-23
  • FIRST EPSSEPSS score1.3 %2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2023-10-18
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-45146?

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.

Is CVE-2023-45146 actively exploited?

A proof-of-concept exploit exists for CVE-2023-45146, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-45146?

CVE-2023-45146 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

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