CVE-2026-112006
mediumpriority · track · 26EPSS 0.002 · 12 %ileEPSS · scored 2026-10-27
OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 contains an improper certificate validation vulnerability that disables TLS verification when OTEL_EXPORTER_OTLP_CERTIFICATE variables are empty strings. Man-in-the-middle attackers can impersonate the collector to read or alter exported traces, metrics, and logs, including authentication headers from OTEL_EXPORTER_OTLP_HEADERS.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.8–8.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products
Products and version ranges known to be affected.
No affected products recorded.
sources
Which sources assert this record, and when.
references (5) nvd
External citations — patches, advisories, analysis.
- https://github.com/open-telemetry/opentelemetry-python/blob/v1.44.0/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py#L170-L185
- https://github.com/open-telemetry/opentelemetry-python/blob/v1.44.0/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py#L93-L96
- https://github.com/open-telemetry/opentelemetry-python/commit/89cc68b9ea7e15969b4f042d63397bdc74a3d60e
- https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0
- https://www.vulncheck.com/advisories/opentelemetry-opentelemetry-exporter-otlp-proto-http-1.5.0-before-1.45.0-improper-certificate-validation
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan