CVE-2026-47256OpenTelemetry: Path traversal in Sentry exporter via attacker-controlled service.name reaches privileged Sentry API endpoints with operator bearer token
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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.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-22, CWE-74
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
open-telemetry opentelemetry-collector-contrib open_telemetry:opentelemetry_collector_contrib (from the name) | before 0.154.0 | CNA record |
open-telemetry github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter open_telemetry:github.com_open_telemetry_opentelemetry_collector_contrib_exporter_sentryexporter (from the name) | before 0.154.0 | CNA record |
References
- https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-4jvg-4jfx-fmhcx-refsource-confirm
- https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/3113638f216143f523b57f447728464337ae4903x-refsource-misc
- https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.154.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.