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Advisory record · GHSA-h8w2-rv57-vc6f

splunk-otel-javaagent: Unsafe deserialization in RMI instrumentation may lead to Remote Code Execution

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 26 Mar 2026, 17:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.splunk:splunk-otel-javaagentMaven<2.26.12.26.1
Identifiers
GHSA-h8w2-rv57-vc6f
Weakness (CWE)
CWE-502 · CWE-1395
Tags
Published
26 Mar 2026
Updated
26 Mar 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The splunk-otel-javaagent package, versions before 2.26.1, has an unsafe deserialization flaw in its RMI instrumentation. An attacker with network access to a JMX or RMI port on an instrumented JVM, plus a compatible gadget-chain library on the classpath, could achieve remote code execution. Upgrade to 2.26.1 or later; a workaround is to disable the RMI integration with a system property.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
Not published None 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.