CVE-2026-116694

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.

• https://github.com/open-telemetry/opentelemetry-python/commit/65c4eeb87cd3815dc795d3b5485e9ea0d5affcc7
• https://github.com/open-telemetry/opentelemetry-python/pull/5556
• https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0
• https://github.com/open-telemetry/opentelemetry-python/security/advisories/GHSA-f5m9-jfrj-jjj7

• https://github.com/open-telemetry/opentelemetry-python/commit/65c4eeb87cd3815dc795d3b5485e9ea0d5affcc7
• https://github.com/open-telemetry/opentelemetry-python/pull/5556
• https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0
• https://github.com/open-telemetry/opentelemetry-python/security/advisories/GHSA-f5m9-jfrj-jjj7

• HIGHCVE-2023-54404PoC
• MEDIUMCVE-2025-12767
• MEDIUMCVE-2025-36061
• UNSCOREDCVE-2025-8352
• MEDIUMCVE-2026-100274
• MEDIUMCVE-2026-100350PoC
• MEDIUMCVE-2026-100508
• MEDIUMCVE-2026-100600PoC

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