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Vulnerability · Published May 28, 2026 · Assigned by GitHub_M

CVE-2026-45292opentelemetry-java: Unbounded Memory Allocation in W3C Baggage Propagation

Medium 5.3

In plain English

A medium-severity resource allocation without limits in opentelemetry-api from io.opentelemetry. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)1.1%top 34.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

opentelemetry-java is the Java implementation of the OpenTelemetry API for recording telemetry, and SDK for managing telemetry recorded by the API. Prior to 1.62.0, a vulnerability affects the baggage propagation implementation in opentelemetry-api and opentelemetry-extension-trace-propagators. Parsing oversized baggage causes unbounded memory allocation and CPU consumption. Because baggage is automatically re-injected into every outgoing request, the effect can fan out to downstream services that never received the original malicious request. This vulnerability is fixed in 1.62.0.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenio.opentelemetry:opentelemetry-api1.62.0GHSA-rcgg-9c38-7xpx
Mavenio.opentelemetry:opentelemetry-extension-trace-propagators1.62.0GHSA-rcgg-9c38-7xpx

Affected products (as reported)

VendorProductVersions
open-telemetry opentelemetry-java < 1.62.0
io.opentelemetry opentelemetry-api 1.62.0
io.opentelemetry opentelemetry-extension-trace-propagators 1.62.0

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References