Is CVE-2026-44213 actively exploited?

No active exploitation of CVE-2026-44213 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44213 be exploited remotely?

Yes. CVE-2026-44213 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44213?

CVE-2026-44213 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-44213

CWE-295Published: May 26, 2026· Updated: May 29, 2026

6.5

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2026-44213 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 6.5.