What’s Vulnerable › Vulnerabilities
CVE-2026-54712: OpenTelemetry Javaagent RMI context propagation allows resource exhaustion
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-01 · updated 2026-10-25
- Weakness: CWE-400
Description
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 products
- open-telemetry opentelemetry-java-instrumentation: from 2.26.1 before 2.27.0 — fixed in 2.27.0
How to fix
Upgrade to a fixed version: open-telemetry opentelemetry-java-instrumentation 2.27.0. Check the vendor advisory for mitigations.
References
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