Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-44213— OpenTelemetry.Exporter.Instana bypasses TLS certificate validation when a proxy is configured

Quick assessment

Affected
open-telemetry opentelemetry-dotnet-contrib
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenTelemetry Collector Contrib是OpenTelemetry - CNCF开源的一个可扩展的遥测数据采集组件库。 OpenTelemetry Collector Contrib 1.1.0之前版本存在信任管理问题漏洞，该漏洞源于使用INSTANA_ENDPOINT_PROXY环境变量配置代理时未验证HTTPS/TLS证书有效性，网络攻击者通过中间人攻击代理连接可能导致遥测数据和Instana API密钥泄露。

CVSS 6.5 · Medium EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
open-telemetry opentelemetry-dotnet-contrib < 1.1.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-44213

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OpenTelemetry.Exporter.Instana bypasses TLS certificate validation when a proxy is configured
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenTelemetry Collector Contrib 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry Collector Contrib是OpenTelemetry - CNCF开源的一个可扩展的遥测数据采集组件库。 OpenTelemetry Collector Contrib 1.1.0之前版本存在信任管理问题漏洞，该漏洞源于使用INSTANA_ENDPOINT_PROXY环境变量配置代理时未验证HTTPS/TLS证书有效性，网络攻击者通过中间人攻击代理连接可能导致遥测数据和Instana API密钥泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
open-telemetry opentelemetry-dotnet-contrib < 1.1.0 -

II. Public POCs for CVE-2026-44213

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-44213

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-44213 (1)

IV. Related Vulnerabilities

Same product: opentelemetry-dotnet-contrib
Same vendor: open-telemetry
Same weakness: CWE-295

V. Comments for CVE-2026-44213

No comments yet

Leave a comment