CVE-2026-47256Medium· 5.3▾ TwilightPoC availableOpenTelemetry, 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 r…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 29.2 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Exploit / PoC code exists
0.4%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter < 0.154.0Patched in:
github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter 0.154.0Source: https://github.com/advisories/GHSA-4jvg-4jfx-fmhc
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-55701Medium· 6.9The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector
CVE-2026-81870Low· 2.0OpenTelemetry-Go is the Go implementation of OpenTelemetry
CVE-2026-81872Medium· 6.3OpenTelemetry-Go is the Go implementation of OpenTelemetry
CVE-2026-81869Medium· 5.1OpenTelemetry-Go is the Go implementation of OpenTelemetry
CVE-2026-81871Medium· 6.3OpenTelemetry-Go is the Go implementation of OpenTelemetry
CVE-2026-47701High· 7.7The OpenTelemetry Operator is a Kubernetes Operator for the OpenTelemetry Collector