CVE-2026-48496 open-telemetry CVE debrief

Who should care

Defenders responsible for systems using OpenTelemetry eBPF Profiler should assess exposure and prioritize verification and potential upgrades to mitigate the denial-of-service vulnerability.

Why it matters

CVE-2026-48496 is a denial-of-service vulnerability in OpenTelemetry eBPF Profiler that can be exploited by an unprivileged process, causing the profiler to block indefinitely. Defenders should verify exposure, prioritize upgrades, and update incident response plans to address potential exploitation.

• Denial-of-service conditions may occur in systems using vulnerable OpenTelemetry eBPF Profiler versions.
• Verification of exposure and potential exploitation is necessary to prevent service disruptions.
• Upgrades to version 0.0.202622 or later are required to apply the patch and prevent exploitation.
• Monitoring and incident response planning should be updated to address potential exploitation.

Technical summary

The OpenTelemetry eBPF Profiler is vulnerable to a denial-of-service attack in versions 0.0.202527 and earlier. An unprivileged process can cause the profiler to open a non-regular mapping file, such as a FIFO, and block indefinitely, preventing further ELF analysis. This vulnerability allows an attacker to disrupt the profiling functionality, leading to a denial-of-service condition. The affected product context indicates that OpenTelemetry eBPF Profiler versions prior to 0.0.202622 are susceptible to this vulnerability. The defensive impact is significant, as it can cause service disruptions and necessitate upgrades to prevent exploitation. The technical framing of this vulnerability is grounded in the source

Defensive priority

Defenders should prioritize verifying exposure in systems using OpenTelemetry eBPF Profiler versions 0.0.202527 and earlier, and assess the impact of the denial-of-service vulnerability.

Recommended defensive actions

• Verify the version of OpenTelemetry eBPF Profiler in use and assess exposure to the denial-of-service vulnerability.
• Upgrade to version 0.0.202622 or later to apply the patch.
• Monitor systems for potential denial-of-service conditions.
• Review and update incident response plans to address potential exploitation.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in OpenTelemetry eBPF Profiler, including the affected version range and a patched version. However, the corpus does not provide information on known exploitation or specific attack vectors.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.