{"id":"CVE-2026-112006","summary":"OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0 Improper Certificate Validation","details":"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.","modified":"2026-10-19T02:46:47.900025696Z","published":"2026-10-18T11:38:29.855Z","database_specific":{"cwe_ids":["CWE-295"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112006.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112006.json"},{"type":"PACKAGE","url":"https://github.com/open-telemetry/opentelemetry-python"},{"type":"ARTICLE","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"},{"type":"ARTICLE","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"},{"type":"FIX","url":"https://github.com/open-telemetry/opentelemetry-python/commit/89cc68b9ea7e15969b4f042d63397bdc74a3d60e"},{"type":"ADVISORY","url":"https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112006"},{"type":"WEB","url":"https://pypi.org"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/opentelemetry-opentelemetry-exporter-otlp-proto-http-1.5.0-before-1.45.0-improper-certificate-validation"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-telemetry/opentelemetry-python","events":[{"introduced":"3b190f5af766294c5064d2787ab6c8681be1619d"},{"fixed":"4f0fcfa53e53a8c654a34df0d0a1fd74483ebca2"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"1.5.0"},{"fixed":"1.45.0"}]}}],"versions":["v1.13.0","v1.12.0","v1.12.0rc2","v1.12.0rc1","v1.11.1","v1.11.0","v1.10.0","v1.9.1","v1.9.0","v1.8.0","v1.7.1","v1.7.0","v1.6.2","v1.6.1","v1.6.0","v1.5.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112006.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}