CVE-2026-55701

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-55701", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-17T14:45:31.969361Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-17T14:45:39.787Z"}}], "cna": {"title": "OpenTelemetry githubreceiver silently ignores configured required_headers authentication", "source": {"advisory": "GHSA-w5cv-pw74-4rxc", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "open-telemetry", "product": "opentelemetry-collector-contrib", "versions": [{"status": "affected", "version": "< 0.151.0"}]}, {"vendor": "open-telemetry", "product": "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver", "versions": [{"status": "affected", "version": "< 0.151.0"}]}], "references": [{"url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc", "name": "https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854", "name": "https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98", "name": "https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0", "name": "https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/githubreceiver/trace_receiver.go handleReq() does not check those headers on incoming webhook requests. An unauthenticated sender can therefore bypass an operator's required_headers authentication control and submit arbitrary webhook payloads. When the Secret field is empty, github.ValidatePayload also skips HMAC validation, leaving the webhook endpoint without either configured authentication mechanism. Successful exploitation can inject fabricated CI/CD trace data into the observability pipeline. This issue is fixed in version 0.151.0."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-15T15:05:15.715Z"}}}, "cveMetadata": {"cveId": "CVE-2026-55701", "state": "PUBLISHED", "dateUpdated": "2026-09-17T14:45:43.493Z", "dateReserved": "2026-06-17T00:13:10.651Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-09-15T15:05:15.715Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "opentelemetry-collector-contrib", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": "< 0.151.0"}]}, {"product": "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": "< 0.151.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/githubreceiver/trace_receiver.go handleReq() does not check those headers on incoming webhook requests. An unauthenticated sender can therefore bypass an operator's required_headers authentication control and submit arbitrary webhook payloads. When the Secret field is empty, github.ValidatePayload also skips HMAC validation, leaving the webhook endpoint without either configured authentication mechanism. Successful exploitation can inject fabricated CI/CD trace data into the observability pipeline. This issue is fixed in version 0.151.0."}], "id": "CVE-2026-55701", "lastModified": "2026-09-30T17:43:24.057", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55701", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-17T14:45:31.969361Z", "version": "2.0.3"}}]}, "published": "2026-09-15T16:17:15.617", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver: OpenTelemetry Collector Contrib githubreceiver: Unauthorized data injection via authentication bypass", "id": "2533955", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533955"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-306", "details": ["A flaw was found in the OpenTelemetry Collector Contrib's githubreceiver component. An unauthenticated attacker can bypass authentication mechanisms, including required headers and HMAC validation, when the 'Secret' field is empty. This allows the attacker to submit arbitrary webhook payloads, leading to the injection of fabricated Continuous Integration/Continuous Delivery (CI/CD) trace data into the observability pipeline. This could compromise the integrity of monitoring and operational insights."], "mitigation": {"lang": "en:us", "value": "To prevent unauthorized data injection, configure the `githubreceiver` with a robust secret for HMAC validation. Ensure that the `Secret` field is never left empty in the `githubreceiver` configuration. If the `githubreceiver` is not essential for your deployment, disable or remove the component to eliminate this attack vector. A restart of the OpenTelemetry Collector may be required for configuration changes to take effect."}, "name": "CVE-2026-55701", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "opentelemetry-collector-contrib", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-15T15:05:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-55701\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-55701\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.151.0)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "matching", "scores": [{"score": 99.0, "source": "matching"}]}, "original": {"product": "opentelemetry-collector-contrib", "source": "cna", "vendor": "open-telemetry"}, "product": "opentelemetry_collector_contrib", "vendor": "opentelemetry"}], "created": "2026-09-16T03:45:08.121332+00:00", "updated": "2026-09-20T17:00:13.367768+00:00", "vendors": ["opentelemetry", "opentelemetry$PRODUCT$opentelemetry_collector_contrib"]}