CVE-2026-45686 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-45686HIGH

open-telemetry opentelemetry-ebpf-instrumentation — OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0035   28.6     —

AFFECTED
  Product                             Versions             Fixed
  opentelemetry-ebpf-instrumentation  >= 0.7.0, < 0.9.0 –  —

TIMELINE
  May 13  Reserved by GitHub_M
  Jun 2   EXPLOIT PUBLISHED — CVE-2026-45686 (open-telemetry opentelemetry-ebpf-instrumentation). Public exploit reference added.
  Jun 2   Published (CNA: GitHub_M)

CWE-190 · CNA: GitHub_M · CVSS v3.1 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 13, 2026	Reserved	Reserved by GitHub_M
June 2, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-45686 (open-telemetry opentelemetry-ebpf-instrumentation). Public exploit reference added.
June 2, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
open-telemetry	opentelemetry-ebpf-instrumentation	—	>= 0.7.0, < 0.9.0	—

Weaknesses

CWE-190

References (2)

https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0 [Product, Release Notes]
https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-45686 at cve.org

Vendors: open-telemetry

Weaknesses: CWE-190

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-45686 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.