CVE-2026-45404
OpenTelemetry-Go: Unsynchronized baggage map can panic under concurrent access
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-362 CWE-667 |
| Vendor | open-telemetry |
| Product | opentelemetry-go |
| Published | Aug 24, 2026 |
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Affected Versions
open-telemetry / opentelemetry-go
>= 0.11.0, < 1.45.0
References
github.com: https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-42cj-99w8-cp2p github.com: https://github.com/open-telemetry/opentelemetry-go/pull/8693 github.com: https://github.com/open-telemetry/opentelemetry-go/commit/93a693edeed0e07ce5ebd1dfe67af42d1e2055d8 github.com: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.45.0