Vulnerability-Lookup

CERTFR-2026-AVI-0379

Vulnerability from certfr_avis - Published: 2026-03-31 - Updated: 2026-03-31

Une vulnérabilité a été découverte dans Elastic OpenTelemetry Java. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Elastic	OpenTelemetry Java	OpenTelemetry Java versions antérieurs à 1.10.0

References

Title

Publication Time

CVE-2026-33701 (GCVE-0-2026-33701)

Vulnerability from cvelistv5 – Published: 2026-03-27 00:01 – Updated: 2026-03-27 13:52

Title

OpenTelemetry: Unsafe Deserialization in RMI Instrumentation may Lead to Remote Code Execution

Summary

OpenTelemetry Java Instrumentation provides OpenTelemetry auto-instrumentation and instrumentation libraries for Java. In versions prior to 2.26.1, the RMI instrumentation registered a custom endpoint that deserialized incoming data without applying serialization filters. On JDK version 16 and earlier, an attacker with network access to a JMX or RMI port on an instrumented JVM could exploit this to potentially achieve remote code execution. All three of the following conditions must be true to exploit this vulnerability: First, OpenTelemetry Java instrumentation is attached as a Java agent (`-javaagent`) on Java 16 or earlier. Second, JMX/RMI port has been explicitly configured via `-Dcom.sun.management.jmxremote.port` and is network-reachable. Third, gadget-chain-compatible library is present on the classpath. This results in arbitrary remote code execution with the privileges of the user running the instrumented JVM. For JDK >= 17, no action is required, but upgrading is strongly encouraged. For JDK < 17, upgrade to version 2.26.1 or later. As a workaround, set the system property `-Dotel.instrumentation.rmi.enabled=false` to disable the RMI integration.

Severity ?

9.3 (Critical)


                        
                          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

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

GitHub_M

References

URL

Tags

	https://github.com/open-telemetry/opentelemetry-j…	x_refsource_CONFIRM
	https://github.com/open-telemetry/opentelemetry-j…	x_refsource_MISC
	https://github.com/open-telemetry/opentelemetry-j…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	open-telemetry	opentelemetry-java-instrumentation	Affected: < 2.26.1

Show details on NVD website

JSON

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    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33701",
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                  {
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                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T13:26:02.475553Z",
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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