CVE-2026-45686CWE-190

OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI

High · published June 2, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
43.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00515 · 43.0th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-06-02T15:25Z
EPSS history
Timeline
  • 02 JUN 15:25Z
    OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI
    cvelistv5