CVE-2026-112006

OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation

Assigner: VulnCheck
Reserved: 18.10.2026 Published: 18.10.2026 Updated: 18.10.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	OpenTelemetry
Product	opentelemetry-exporter-otlp-proto-http
Versions	Default: unaffected affected from 1.5.0 to 1.45.0 (excl.)

Vendor

OpenTelemetry

Product

opentelemetry-exporter-otlp-proto-http

Versions

Default: unaffected

affected from 1.5.0 to 1.45.0 (excl.)

Credits

Fawwaz Musaffa finder

References

Problem Types