CVE-2026-44967

OpenTelemetry-cpp is the C++ implementation of OpenTelemetry. Prior to release 1.27.0, the OTLP HTTP exporters (traces/metrics/logs) read the full HTTP response into an in-memory vector of bytes without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can MITM the exporter connection). This vulnerability is fixed in opentelemetry-cpp release 1.27.0.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/open-telemetry/opentelemetry-cpp/issues/3958	Issue Tracking
https://github.com/open-telemetry/opentelemetry-cpp/pull/4078	Issue Tracking
https://github.com/open-telemetry/opentelemetry-cpp/security/advisories/GHSA-5qhm-4rfp-qqvj	Vendor Advisory
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58	Not Applicable Vendor Advisory
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58	Not Applicable Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:c\+\+:*:*

History

No history.

Information

Published : 2026-06-12 16:16

Updated : 2026-06-17 10:51

NVD link : CVE-2026-44967

Mitre link : CVE-2026-44967

CVE.ORG link : CVE-2026-44967

JSON object : View

Products Affected

opentelemetry

opentelemetry

CWE

CWE-789

Memory Allocation with Excessive Size Value

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