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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-44967— opentelemetry-cpp: OTLP HTTP exporters read unbounded HTTP response

Quick assessment

Affected
open-telemetry opentelemetry-cpp
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 C++是OpenTelemetry团队的一款用于收集和导出遥测数据的服务器端支撑软件。 OpenTelemetry C++ 1.27.0之前版本存在资源管理错误漏洞，该漏洞源于OTLP HTTP导出器将完整的HTTP响应读入内存字节向量且无大小限制，可能导致在配置的收集器端点被攻击者控制时引发内存耗尽。

CVSS 5.3 · Medium EPSS 0.30% · P20

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
open-telemetry opentelemetry-cpp < 1.27.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-44967

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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-cpp: OTLP HTTP exporters read unbounded HTTP response
Source: CVE Program / CVE List V5
Vulnerability Description
OpenTelemetry-cpp is the C++ implementation of OpenTelemetry. Prior to release 1.27.0, the OTLP HTTP exporters (traces/metrics/logs) read the full HTTP response into an in-memory vector of bytes without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can MITM the exporter connection). This vulnerability is fixed in opentelemetry-cpp release 1.27.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
OpenTelemetry C++ 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry C++是OpenTelemetry团队的一款用于收集和导出遥测数据的服务器端支撑软件。 OpenTelemetry C++ 1.27.0之前版本存在资源管理错误漏洞，该漏洞源于OTLP HTTP导出器将完整的HTTP响应读入内存字节向量且无大小限制，可能导致在配置的收集器端点被攻击者控制时引发内存耗尽。
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-cpp < 1.27.0 -

II. Public POCs for CVE-2026-44967

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-44967

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-44967 (1)

Vendor Advisories for CVE-2026-44967 (2)

Proof of Concept for CVE-2026-44967 (1)

IV. Related Vulnerabilities

Same vendor: open-telemetry
Same weakness: CWE-789

V. Comments for CVE-2026-44967

No comments yet

Leave a comment