CVE-2026-116694

Description

OpenTelemetry Python provides the Python API and SDK for OpenTelemetry. Prior to 1.45.0, JaegerPropagator.extract() in opentelemetry-propagator-jaeger processes inbound uberctx-* baggage values without entry, per-entry byte, or total-byte limits. Services that enable the optional Jaeger propagator can perform unnecessary CPU work and short-lived heap allocations when an untrusted carrier supplies numerous or oversized values, contributing to denial of service when transport-level limits do not constrain the input. Common default Python HTTP server limits reduce the practical impact, while custom getters, non-HTTP transports, or raised header limits increase exposure. This issue is fixed in version 1.45.0.

References

https://github.com/open-telemetry/opentelemetry-python/security/advisories/GHSA-f5m9-jfrj-jjj7

https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0

https://github.com/open-telemetry/opentelemetry-python/pull/5556

https://github.com/open-telemetry/opentelemetry-python/commit/65c4eeb87cd3815dc795d3b5485e9ea0d5affcc7

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-111385

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4