Answer in brief
CVE-2026-47256 records a Medium severity vulnerability in OpenTelemetry: Path traversal in Sentry exporter via attacker-controlled service.name reaches privileged Sentry API endpoints with operator bearer token. The current sources do not mark it as known exploited. The current feed maps open-telemetry/github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter (generic), open-telemetry/opentelemetry-collector-contrib (generic), github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps open-telemetry/github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter (generic), open-telemetry/opentelemetry-collector-contrib (generic), github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| open-telemetry/github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexportergeneric | < 0.154.0 | Not reported |
| open-telemetry/opentelemetry-collector-contribgeneric | < 0.154.0 | Not reported |
| github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexportergo | <0.154.0 | 0.154.0 |
Published upstream
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.