CVE-2026-44213
Medium
Description
The OpenTelemetry.Exporter.Instana exports telemetry to Instana backend. Prior to 1.1.0, the OpenTelemetry.Exporter.Instana NuGet package does not validate HTTPS/TLS certificates are valid when sending telemetry to a configured Instana back-end when a proxy is configured using the INSTANA_ENDPOINT_PROXY environment variable. If a network attacker can Man-in-the-Middle (MitM) the proxy connection, all OpenTelemetry telemetry data and the Instana API key are exposed to the attacker. This vulnerability is fixed in 1.1.0.
SeverityMedium
CVSS6.5
Exploit probability—
ProductOpentelemetry.exporter.instana
PublishedMay 26, 2026
First seenMay 26, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- OpenTelemetry.Exporter.Instana1.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| OpenTelemetry.Exporter.InstanaNuGet | v < 1.1.0 | 1.1.0 |
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