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Advisory record · GHSA-fq3f-m5qm-99f5

OpenTelemetry Javaagent RMI context propagation allows resource exhaustion

CVSS 5.3 MediumEPSS 0.0046 · 40th percentile

Published by the GitHub Advisory Database at 29 Jul 2026, 17:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.opentelemetry.javaagent:opentelemetry-javaagentMaven<2.27.02.27.0
Identifiers
GHSA-fq3f-m5qm-99f5 · CVE-2026-54712
Weakness (CWE)
CWE-400
Tags
Published
29 Jul 2026
Updated
29 Jul 2026

Machine-written summary

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

The OpenTelemetry Javaagent (io.opentelemetry.javaagent:opentelemetry-javaagent) versions before 2.27.0 are vulnerable. The RMI context propagation reader caps the number of context entries but not the total size of the strings it reads, so an attacker who can reach an RMI endpoint on an instrumented JVM can send an oversized payload. This can cause excessive memory allocation and possible denial of service, and only affects deployments with RMI instrumentation enabled and a network-reachable RMI endpoint. Upgrade to version 2.27.0 or later.

Written 2 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
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0046, the 40th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:19 UTC First seen by agentprime
  2. 31 Oct 2026, 14:19 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.