---
cve: "CVE-2026-45686"
severity: "HIGH"
cvss: 7.5
epss: "35%"
vendor: "open-telemetry"
kev: false
exploited: false
published: "2026-06-02 15:25:55"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T04:38:32+02:00"
---

# CVE-2026-45686

> 7.5 HIGH · 🧪 PoC

## Beschreibung

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  values and adds the payload delimiter length without checking for overflow. A crafted request with  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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- e92b0c2dd4d88b90d28b7b706eacbac2fabd2623 (Commit)

## Referenzen

- <https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh>
- <https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-45686) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_