Denial of Service Vulnerability in OpenTelemetry-Go by OpenTelemetry
CVE-2026-45404

5.9MEDIUM

Key Information:

Vendor

Open-telemetry

Status
Opentelemetry-go
Vendor
CVE Published:
24 August 2026

What is CVE-2026-45404?

OpenTelemetry-Go has a vulnerability in its OpenTracing bridge's bridgeSpan, specifically involving an unsynchronized extraBaggageItems map. This flaw leads to a risk of runtime errors when concurrent operations, such as Setting Baggage Items or mapping from context, occur on the same bridgeSpan. These operations can cause fatal errors like concurrent map read and write or concurrent map iteration causing the process to terminate unexpectedly, resulting in denial of service. The issue has been resolved in version 1.45.0.

Affected Version(s)

opentelemetry-go >= 0.11.0, < 1.45.0

References

https://github.com/open-telemetry/opentelemetry-go/securi...
x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-go/pull/8693
x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-go/commit...
x_refsource_MISC

CVSS V4

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.