Answer in brief
CVE-2026-116694 records a Medium severity (CVSS 6.3) vulnerability in OpenTelemetry Python: Unbounded memory allocation in Jaeger baggage propagation. The current sources do not mark it as known exploited. The current feed maps open-telemetry/opentelemetry-python (generic), opentelemetry-propagator-jaeger (pip). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps open-telemetry/opentelemetry-python (generic), opentelemetry-propagator-jaeger (pip). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| open-telemetry/opentelemetry-pythongeneric | <1.45.0 | 1.45.0 |
| opentelemetry-propagator-jaegerpip | <=1.44.0 | 1.45.0 |
Published upstream
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 27, 2026
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.
Quoted source text, attributed separately from HOL analysis.