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CVE-2026-81872— OpenTelemetry-Go 批量处理器忙等待漏洞

一分钟漏洞结论

影响对象
open-telemetry opentelemetry-go
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is

CVSS 6.3 · Medium

可能的 ATT&CK 技术 1 AI

T1499 · Endpoint Denial of Service
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一、 漏洞 CVE-2026-81872 基础信息

漏洞信息

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Vulnerability Title
OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full
来源: CVE Program / CVE List V5
Vulnerability Description
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is backpressured. NewBatchingProcessor wraps the exporter with newBufferExporter(exporter, 1), and the poll loop calls queue.TryDequeue and bufferExporter.EnqueueExport before immediately signaling pollTrigger whenever the queue remains at or above batchSize. Because a failed nonblocking EnqueueExport leaves the queue length unchanged, the processor repeatedly retries without waiting for its ticker, exhausting CPU and degrading or denying service in the embedding process. This issue is fixed in version 0.21.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
open-telemetry opentelemetry-go < 0.21.0 -

二、漏洞 CVE-2026-81872 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2026-81872 的情报信息

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CVE-2026-81872 补丁与修复 (1)

CVE-2026-81872 其他参考 (3)

同批安全公告 · open-telemetry · 2026-09-16 · 共 4 条

CVE-2026-81871 6.3 MEDIUM OpenTelemetry-Go gRPC导出器TLS证书绕过漏洞
CVE-2026-81869 5.1 MEDIUM OpenTelemetry-Go 属性截断绕过漏洞
CVE-2026-81870 2.0 LOW OpenTelemetry-Go: Exporter config logging may leak endpoint URLs in info logs

IV. Related Vulnerabilities

Same product: opentelemetry-go
Same vendor: open-telemetry
Same weakness: CWE-400

V. Comments for CVE-2026-81872

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