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Fencer Vulns
medium 5.9

CVE-2026-45680 json

OpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU

published 2026-05-18 5 mo ago modified 2026-07-22 3 mo ago also EUVD-2026-33954 , GHSA-89c6-vpcj-7vj4 , GO-2026-5248

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 25%
public exploits
0
none known

Summary

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, OBI replays BPF probe hits into histogram observations by looping once per recorded run count. On busy systems, the run-count delta can become very large, causing the metrics exporter to spend excessive CPU time in a tight loop every collection interval. This issue has been patched in version 0.9.0.

Patch / fix

  • go go.opentelemetry.io/obi 0.9.0
  • opentelemetry ebpf_instrumentation 0.9.0
  • opentelemetry opentelemetry_ebpf_instrumentation 0.9.0
  • alloy SLES for SAP applications 16.0, SLES 16.0 1.19.2-160000.1.1
  • alloy SLE Module for Basesystem 15 SP7 1.19.2-150700.15.29.1

suse advisories SUSE-SU-2026:24148-1SUSE-SU-2026:4408-1

  • alloy openSUSE Leap 16.0 1.19.2-160000.1.1
  • alloy openSUSE Tumbleweed 1.19.2-1.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:22032-1openSUSE-SU-2026:11803-1openSUSE-SU-2026:21483-1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-89c6-vpcj-7vj4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go go.opentelemetry.io/obi
<0.9.0
0.9.0

Affected products

  • open-telemetry opentelemetry-ebpf-instrumentation

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-834 Excessive Iteration

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.