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CVE-2026-45686— OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI

CVSS 7.5 · High

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
open-telemetryopentelemetry-ebpf-instrumentation>= 0.7.0, < 0.9.0affected
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I. Basic Information for CVE-2026-45686

Vulnerability Information
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Vulnerability Title
OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI
Source: NVD (National Vulnerability Database)
Vulnerability Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing memcached storage commands such as set, add, replace, append, prepend, or cas, OBI accepts extremely large <bytes> values and adds the payload delimiter length without checking for overflow. A crafted request with <bytes> set to math.MaxInt or math.MaxInt-1 causes the computed payload length to wrap negative and triggers a runtime panic in LargeBufferReader.Peek. This issue has been patched in version 0.9.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
open-telemetryopentelemetry-ebpf-instrumentation >= 0.7.0, < 0.9.0 -

II. Public POCs for CVE-2026-45686

#POC DescriptionSource LinkShenlong Link
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Qwen3.6-35B-A3B · 8855 chars
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III. Intelligence Information for CVE-2026-45686

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Vendor Advisories for CVE-2026-45686 (1)

Vendor Pages for CVE-2026-45686 (1)

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

CVE-2026-456857.5 HIGHOpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages
CVE-2026-456787.5 HIGHOpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads
CVE-2026-456796.5 MEDIUMOpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages
CVE-2026-456815.9 MEDIUMOpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB si
CVE-2026-456805.9 MEDIUMOpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU
CVE-2026-456765.5 MEDIUMOpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash a
CVE-2026-456825.1 MEDIUMOpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals
CVE-2026-456844.9 MEDIUMOpenTelemetry eBPF Instrumentation: Log enricher writev path can overread and overwrite us
CVE-2026-456833.8 LOWOpenTelemetry 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-190

V. Comments for CVE-2026-45686

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