How severe is CVE-2026-45685?

CVE-2026-45685 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-45685 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45685?

CVE-2026-45685 affects Opentelemetry Ebpf Instrumentation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45685?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-45685 have an EU (EUVD) identifier?

Yes. CVE-2026-45685 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33958.

When was CVE-2026-45685 published?

CVE-2026-45685 was published on 2026-06-02 and last updated on 2026-06-17.

CVE-2026-45685

CVE-2026-45685 is a high-severity vulnerability in Opentelemetry Ebpf Instrumentation with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33958
Weakness: CWE-20
Affected product: Opentelemetry Ebpf Instrumentation
Published: 2026-06-02
Last modified: 2026-06-17

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.1.0 to before version 0.9.0, malformed MongoDB wire messages can trigger uncaught panics in the MongoDB TCP parser, allowing a remote unauthenticated attacker to crash the telemetry agent and cause a denial of service. The parser operates on raw attacker-controlled network payloads before the input is fully validated, so a single crafted message can terminate telemetry collection for the affected process or node. This issue has been patched in version 0.9.0.

Frequently asked questions

What is CVE-2026-45685?: OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.1.0 to before version 0.9.0, malformed MongoDB wire messages can trigger uncaught panics in the MongoDB TCP parser, allowing a remote unauthenticated attacker to crash the telemetry agent and cause a denial of service. The parser operates on raw attacker-controlled network payloads before the input is fully validated, so a single crafted message can terminate telemetry collection for the affected process or node. This issue has been patched in version 0.9.0.
How severe is CVE-2026-45685?: CVE-2026-45685 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-45685 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45685?: CVE-2026-45685 affects Opentelemetry Ebpf Instrumentation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45685?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-45685 have an EU (EUVD) identifier?: Yes. CVE-2026-45685 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33958.
When was CVE-2026-45685 published?: CVE-2026-45685 was published on 2026-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opentelemetry:ebpf_instrumentation:*:*:*:*:*:go:*:*

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