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CVE-2026-45287— OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse

Quick assessment

Affected
open-telemetry go.opentelemetry.io/otel/schema/v1.1
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-Go是OpenTelemetry - CNCF开源的一个开发者工具包。 OpenTelemetry-Go 0.0.17之前版本存在安全漏洞，该漏洞源于每次成功ParseFile调用泄漏一个文件描述符，重复解析可能耗尽进程文件描述符限制并导致拒绝服务。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.18% · P6

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
open-telemetry go.opentelemetry.io/otel/schema/v1.0 < 0.0.17 affected
open-telemetry go.opentelemetry.io/otel/schema/v1.1 < 0.0.17 affected
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I. Basic Information for CVE-2026-45287

Vulnerability Information
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Vulnerability Title
OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse
Source: CVE Program / CVE List V5
Vulnerability Description
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.0.17, `go.opentelemetry.io/otel/schema/v1.0` and `go.opentelemetry.io/otel/schema/v1.1` leaks one file descriptor on each successful `ParseFile` call. `ParseFile` opens the schema file and passes it to `Parse` without closing it; repeated parsing in a long-running process can exhaust the process file descriptor limit and cause denial of service. Exploitation depends on a consuming application exposing repeated schema parsing to an attacker-controlled path. Version 0.0.17 contains a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对已超过有效生命周期的资源丧失索引
Source: CVE Program / CVE List V5
Vulnerability Title
OpenTelemetry-Go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry-Go是OpenTelemetry - CNCF开源的一个开发者工具包。 OpenTelemetry-Go 0.0.17之前版本存在安全漏洞，该漏洞源于每次成功ParseFile调用泄漏一个文件描述符，重复解析可能耗尽进程文件描述符限制并导致拒绝服务。
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 go.opentelemetry.io/otel/schema/v1.1 < 0.0.17 -
open-telemetry go.opentelemetry.io/otel/schema/v1.0 < 0.0.17 -

II. Public POCs for CVE-2026-45287

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III. Intelligence Information for CVE-2026-45287

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Patches & Fixes for CVE-2026-45287 (1)

Vendor Advisories for CVE-2026-45287 (1)

IV. Related Vulnerabilities

Same vendor: open-telemetry
Same weakness: CWE-772

V. Comments for CVE-2026-45287

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