SEPTEMBER 15, 2026
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Case File

CVE-2026-47256

MEDIUM · CVSS 5.3 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-14 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

The vulnerability affects the Sentry exporter component of OpenTelemetry, where improper handling of the service.name resource attribute allows an attacker to manipulate the project slug, potentially leading to unauthorized access to sensitive administrative endpoints within the Sentry organization. This could enable attackers to redirect telemetry data and exploit token-authorized access. Organizations using versions prior to 0.154.0 should prioritize updating to the latest version to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-47256
Severity
MEDIUM
CVSS
5.3
EPSS
N/A

Original NVD Description

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.