Aerospike Java Client vulnerable to unsafe deserialization of server responses

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2023-36480: 1.78% estimated exploitation activity in the next 30 days; percentile 78.23 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

GitHub Security Lab (GHSL) Vulnerability Report: GHSL-2023-044 The GitHub Security Lab team has identified a potential security vulnerability in Aerospike Java Client. We are committed to working with you to help resolve this issue. In this report you will find everything you need to effectively coordinate a resolution of this issue with the GHSL team. If at any point you have concerns or questions about this process, please do not hesitate to reach out to us at securitylab@github.com (please include GHSL-2023-044 as a reference). If you are NOT the correct point of contact for this report, please let us know! Summary The Aerospike Java client is a Java application that implements a network protocol to communicate with an Aerospike server. Some of the messages received from the server contain Java objects that the client deserializes when it encounters them without further validation. Attackers that manage to trick clients into communicating with a malicious server can include…

Published by the source

3 Aug 2023, 19:45 UTC

Last modified by the source

10 Nov 2023, 05:01 UTC

Source last checked

26 Oct 2026, 16:16 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-jj95-55cr-9597

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# Patch Next advisory brief: CVE-2023-36480

Advisory: Aerospike Java Client vulnerable to unsafe deserialization of server responses
IDs: CVE-2023-36480, GHSA-jj95-55cr-9597
Record: https://patchnext.com/advisories/cve-2023-36480 (revision 1, source checked 26 Oct 2026, 16:16 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: com.aerospike:aerospike-client 6.2.0, 5.2.0, 4.5.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven com.aerospike:aerospike-client: affected >= 6.0.0, < 6.2.0; >= 5.0.0, < 5.2.0; < 4.5.0; fixed in 4.5.0, 5.2.0, 6.2.0

## Suggested inspection (read-only)
- Maven com.aerospike:aerospike-client: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on com.aerospike:aerospike-client.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-jj95-55cr-9597 (GitHub-reviewed advisory GHSA-jj95-55cr-9597 lists affected ranges: Maven com.aerospike:aerospike-client >=6.0.0 =5.0.0 =0 <4.5.0)

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