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TI-2026-33193 Aliases CVE-2026-45404GHSA-42cj-99w8-cp2p

OpenTelemetry-Go: Unsynchronized baggage map can panic under concurrent access

Priority HIGH 66CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-667 and the CVSS impact.

Summary

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 0.11.0 through 1.44.0, the OpenTracing bridge's bridgeSpan contains an unsynchronized extraBaggageItems map which can cause a panic. Because Go maps are not safe for concurrent read/write access, concurrent SetBaggageItem and correlation.MapFromContext calls on the same hooked bridgeSpan can trigger a fatal runtime error—such as concurrent map read and map write or concurrent map iteration and map write—terminating the process and causing denial of service. This issue is fixed in version 1.45.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00139 3rd percentileScored 2026-11-07
Fix Partial opentelemetry-go (open-telemetry): 1.45.0go.opentelemetry.io/otel/bridge/opentracing (Go): 1.45.0Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
open-telemetryopentelemetry-go0.11.0 to before 1.45.01.45.0Patch availableCNA
—go.opentelemetry.io/otel/bridge/opentracing (Go)0.11.0 to before 1.45.01.45.0Patch availableGHSA-42cj-99w8-cp2p
  • opentelemetry-go Vendoropen-telemetry Affected 0.11.0 to before 1.45.0 Fixed in 1.45.0 Patch available CNA
  • go.opentelemetry.io/otel/bridge/opentracing (Go) Vendor— Affected 0.11.0 to before 1.45.0 Fixed in 1.45.0 Patch available GHSA-42cj-99w8-cp2p

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:*:*:*——open-telemetry
  • cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:*:*:* Versions — — ·open-telemetry

Remediation

  • Fix · CNA opentelemetry-go (open-telemetry) Fixed in 1.45.0
  • Fix · GHSA-42cj-99w8-cp2p go.opentelemetry.io/otel/bridge/opentracing (Go) Fixed in 1.45.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Multicluster Global HubAffectedNo fix yet: Fix deferred
Red Hat Advanced Cluster Management for Kubernetes 2AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45404
  2. 2026-10-03 Alias added: GHSA-42cj-99w8-cp2p

References

Other 5

  • TI-2024-23957 OpenTelemetry Collector has a Denial of Service via Zip/Decompression Bomb sent over HTTP or gRPC CVSS 3.1HIGH 8.2
  • TI-2026-42706 OpenTelemetry JavaScript: Denial of service in `JaegerPropagator` via unhandled exception on a malformed header CVSS 3.1HIGH 7.5
  • TI-2026-33428 OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI CVSS 3.1HIGH 7.5
  • TI-2026-33427 OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages CVSS 3.1HIGH 7.5
  • TI-2026-33420 OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads CVSS 3.1HIGH 7.5
  • TI-2026-32777 opentelemetry-js: Prometheus exporter process crash via malformed HTTP request CVSS 3.1HIGH 7.5
See all 62 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences