{"id":"CVE-2026-112006","title":"OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation","summary":"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…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","cvssSource":"cna","cwe":["CWE-295"],"vendor":"OpenTelemetry","product":"opentelemetry-exporter-otlp-proto-http","affected":["opentelemetry-exporter-otlp-proto-http >= 1.5.0 < 1.45.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-19T15:58:20.248346Z"},"published":"2026-10-18","updated":"2026-10-19","sourceUpdated":"2026-10-19T15:59:16.298Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112006","references":[{"url":"https://github.com/open-telemetry/opentelemetry-python/commit/89cc68b9ea7e15969b4f042d63397bdc74a3d60e"},{"url":"https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0","label":"opentelemetry-exporter-otlp-proto-http v1.45.0 Release Notes"},{"url":"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"},{"url":"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"},{"url":"https://www.vulncheck.com/advisories/opentelemetry-opentelemetry-exporter-otlp-proto-http-1.5.0-before-1.45.0-improper-certificate-validation","label":"VulnCheck Advisory: OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-112006.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-112006"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554746"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-112006"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112006"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00215,"epssPercentile":0.11817,"ingestedAt":"2026-10-18T11:40:26.623Z","slug":"CVE-2026-112006","body":"## Overview\n\nOpenTelemetry 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.\n\n## Affected\n\n- `opentelemetry-exporter-otlp-proto-http >= 1.5.0 < 1.45.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Ansible Automation Orchestrator 2026, Exploit Intelligence, Lightspeed Core, OpenShift Lightspeed, Red Hat AI Inference Server, Red Hat Ansible Automation Platform 2, … · no fix planned: Exploit Intelligence, Red Hat Ansible Automation Platform 2, Red Hat Update Infrastructure 4 for Cloud Providers, Ansible Automation Orchestrator 2026, … · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-112006.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}