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CVE-2026-45682— OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals

Quick assessment

Affected
open-telemetry opentelemetry-ebpf-instrumentation
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 eBPF Instrumentation是OpenTelemetry开源的一个基于eBPF的轻量级遥测数据采集工具。 OpenTelemetry eBPF Instrumentation 0.9.0之前版本存在安全漏洞，该漏洞源于自定义CappedConcurrentHashMap在删除条目时未从插入顺序队列中移除键，可能导致在长时间运行的JVM中队列无界增长并耗尽堆内存。

CVSS 5.1 · Medium EPSS 0.17% · P5

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
open-telemetry opentelemetry-ebpf-instrumentation < 0.9.0 affected
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I. Basic Information for CVE-2026-45682

Vulnerability Information
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Vulnerability Title
OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals
Source: CVE Program / CVE List V5
Vulnerability Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the custom CappedConcurrentHashMap introduced for Java TLS state tracking never removes keys from its insertion-order queue when entries are deleted. In long-running instrumented JVMs, repeated connection churn can therefore grow the queue without bound and exhaust heap memory. This issue has been patched in version 0.9.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenTelemetry eBPF Instrumentation 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry eBPF Instrumentation是OpenTelemetry开源的一个基于eBPF的轻量级遥测数据采集工具。 OpenTelemetry eBPF Instrumentation 0.9.0之前版本存在安全漏洞，该漏洞源于自定义CappedConcurrentHashMap在删除条目时未从插入顺序队列中移除键，可能导致在长时间运行的JVM中队列无界增长并耗尽堆内存。
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-ebpf-instrumentation < 0.9.0 -

II. Public POCs for CVE-2026-45682

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III. Intelligence Information for CVE-2026-45682

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Vendor Advisories for CVE-2026-45682 (1)

Vendor Pages for CVE-2026-45682 (1)

Same Patch Batch · open-telemetry · 2026-06-02 · 10 CVEs total

CVE-2026-45685 7.5 HIGH OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages
CVE-2026-45686 7.5 HIGH OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI
CVE-2026-45678 7.5 HIGH OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads
CVE-2026-45679 6.5 MEDIUM OpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages
CVE-2026-45681 5.9 MEDIUM OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB si
CVE-2026-45680 5.9 MEDIUM OpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU
CVE-2026-45676 5.5 MEDIUM OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash a
CVE-2026-45684 4.9 MEDIUM OpenTelemetry eBPF Instrumentation: Log enricher writev path can overread and overwrite us
CVE-2026-45683 3.8 LOW OpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure

IV. Related Vulnerabilities

Same product: opentelemetry-ebpf-instrumentation
Same vendor: open-telemetry
Same weakness: CWE-401

V. Comments for CVE-2026-45682

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