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MEDIUM severity

opentelemetry-ebpf-profiler: Unprivileged process can trigger a denial of service on the ebpf-profiler agentGHSA-f2r5-5m7w-p5cx

MEDIUMFix: open-telemetry/opentelemetry-ebpf-profiler@234b685

GHSA-f2r5-5m7w-p5cx is a medium-severity (CVSS 6.2) CWE-770 vulnerability in go.opentelemetry.io/ebpf-profiler. A fix is available for go.opentelemetry.io/ebpf-profiler — see the affected versions and patch details below.

Also known asCVE-2026-48496GO-2026-5343
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-f2r5-5m7w-p5cx.

EPSS Exploitation Probability

via FIRST.org ↗
0.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs3th percentile — riskier than 3% of all scored CVEsHighest risk
0.00%0.23%0.46%0.68%0.2%0.1%0.1%Oct 26Nov 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐹go.opentelemetry.io/ebpf-profiler

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Summary

An unprivileged process can easily trigger the processPIDEvents goroutine to be blocked indefinitely, preventing the goroutine from analyzing any new ELF file. The goroutine stays blocked in the openat2 syscall forever and the profiler can no longer work properly, it is a denial of service.

Impact

The impact is limited to denial-of-service on the ebpf-profiler agent:

  • There has to be a malicious workload albeit unprivileged.
  • No exfiltration of data. No loss of data.

Fix

Fixed in https://github.com/open-telemetry/opentelemetry-ebpf-profiler/commit/234b685cab31c2cb2f79e966caeab168bcc489e4.

Fix is part of v.0.0.202622.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogo.opentelemetry.io/ebpf-profiler≥ 0.0.202527&&< 0.0.2026220.0.202622go get go.opentelemetry.io/ebpf-profiler@v0.0.202622

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for go.opentelemetry.io/ebpf-profiler, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update go.opentelemetry.io/ebpf-profiler to 0.0.202622 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f2r5-5m7w-p5cx is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Summary An unprivileged process can easily trigger the `processPIDEvents` goroutine to be blocked indefinitely, preventing the goroutine from analyzing any new ELF file. The goroutine stays blocked in the `openat2` syscall forever and the profiler can no longer work properly, it is a denial of service. ### Impact The impact is limited to denial-of-service on the ebpf-profiler agent: - There has to be a malicious workload albeit unprivileged. - No exfiltration of data. No loss of data. ### Fix Fixed in https://github.com/open-telemetry/opentelemetry-ebpf-profiler/commit/234b685cab31c2
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