What’s Vulnerable › Vulnerabilities
CVE-2026-45292: opentelemetry-java: Unbounded Memory Allocation in W3C Baggage Propagation
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-28 · updated 2026-09-10
- Weakness: CWE-770
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 products
- io.opentelemetry opentelemetry-api: 1.62.0
- io.opentelemetry opentelemetry-extension-trace-propagators: 1.62.0
- open-telemetry opentelemetry-java: before 1.62.0
References
- https://github.com/open-telemetry/opentelemetry-java/commit/03837d3c1763bc35464aea1078671e2ef2336a5f
- https://github.com/open-telemetry/opentelemetry-java/pull/8380
- https://github.com/open-telemetry/opentelemetry-java/releases/tag/v1.62.0
- https://github.com/open-telemetry/opentelemetry-java/security/advisories/GHSA-rcgg-9c38-7xpx
- https://access.redhat.com/errata/RHSA-2026:28573
- https://access.redhat.com/errata/RHSA-2026:36820
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:43038
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/security/cve/CVE-2026-45292
- https://bugzilla.redhat.com/show_bug.cgi?id=2482785
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45292.json
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