CVE-2026-54712: OpenTelemetry Javaagent RMI context propagation allows resource exhaustion
OpenTelemetry Java Instrumentation provides OpenTelemetry auto-instrumentation and instrumentation libraries for Java. In versions prior to 2.27.0, the RMI context propagation payload reader limits the number of context entries but does not limit the aggregate size of the strings read from the stream. An attacker who can reach an RMI endpoint on an instrumented JVM can send an oversized context propagation payload. This can cause excessive memory allocation while the JVM reads the payload, potentially leading to denial of service. The issue affects only deployments where RMI instrumentation is enabled and an RMI endpoint is network-reachable. This issue has been fixed in version 2.27.0.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
opentelemetry-javaagent (RMI context propagation)to a version that resolves this vulnerability.Fixed in 2.27.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-54712?
CVE-2026-54712 has a medium severity rating of 5.3.
How do I fix CVE-2026-54712?
To fix CVE-2026-54712, update the OpenTelemetry Java Instrumentation to version 2.27.0 or later.
What is the risk associated with CVE-2026-54712?
CVE-2026-54712 poses a risk level of 27, indicating the potential for resource exhaustion.
Which software is affected by CVE-2026-54712?
CVE-2026-54712 affects the OpenTelemetry Java Instrumentation and OpenTelemetry Javaagent RMI context propagation.
What vulnerability does CVE-2026-54712 describe?
CVE-2026-54712 describes an issue where RMI context propagation allows unregulated aggregate size of strings leading to resource exhaustion.