CVE-2026-47256

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{"affected": [{"affectedData": [{"product": "opentelemetry-collector-contrib", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": "< 0.154.0"}]}, {"product": "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": "< 0.154.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenTelemetry, also known as OTel, is a vendor-neutral open source Observability framework for instrumenting, generating, collecting, and exporting telemetry data such as traces, metrics, and logs. Prior to 0.154.0, the Sentry exporter reads the remote OTLP sender-controlled service.name resource attribute in exporter/sentryexporter/sentry_exporter.go through extractProjectSlug and getOrCreateProjectEndpoint, passes the raw project slug to GetOTLPEndpoints and GetProjectKeys in exporter/sentryexporter/sentry_client.go, and interpolates it into a Sentry API URL without applying projectSlugRegexp through validateRoutingConfig at runtime in exporter/sentryexporter/config.go. Special characters can turn the expected path suffix into query data in all deployments or introduce slash and dot segments that traverse paths when the Sentry deployment normalizes them, while the Collector attaches its operator-configured bearer token to the request. A successful request can reach token-authorized administrative, organization, member, or key endpoints within the configured Sentry organization, and an attacker-controlled project slug can redirect subsequently exported telemetry. Sentry token middleware prevents cross-organization access. This issue is fixed in version 0.154.0."}], "id": "CVE-2026-47256", "lastModified": "2026-09-25T14:23:59.847", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-47256", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-14T17:59:46.221856Z", "version": "2.0.3"}}]}, "published": "2026-09-14T18:17:48.250", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/3113638f216143f523b57f447728464337ae4903"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.154.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-4jvg-4jfx-fmhc"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-4jvg-4jfx-fmhc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-74"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter: opentelemetry-collector-contrib: OpenTelemetry Sentry Exporter: Path traversal allows unauthorized access to Sentry API endpoints", "id": "2533233", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533233"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-22", "details": ["A flaw was found in the OpenTelemetry Sentry exporter. A remote attacker can exploit a path traversal vulnerability by manipulating the `service.name` attribute. This allows the attacker to craft malicious Sentry API URLs, potentially gaining unauthorized access to sensitive administrative or organization-level endpoints within the configured Sentry organization. Additionally, an attacker could redirect telemetry data, impacting data integrity and confidentiality."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, restrict network access to the OpenTelemetry Collector's OTLP ingestion endpoint to trusted internal networks only. This prevents untrusted remote OTLP senders from providing malicious `service.name` attributes that could exploit the path traversal vulnerability in the Sentry exporter. Ensure that any network firewalls or access control lists are configured to enforce this restriction."}, "name": "CVE-2026-47256", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "opentelemetry-collector-contrib", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-14T17:28:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-47256\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-47256\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/commit/3113638f216143f523b57f447728464337ae4903\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.154.0\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-4jvg-4jfx-fmhc"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.154.0)"}}], "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": "2026-09-15T13:30:13.453902+00:00", "updated": "2026-09-21T00:15:06.433500+00:00", "vendors": ["opentelemetry", "opentelemetry$PRODUCT$opentelemetry_collector_contrib"]}