CVE-2026-44967

5.3 MEDIUM
Published: June 12, 2026 Modified: June 16, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/open-telemetry/opentelemetry-cpp/issues/3958
Source: security-advisories@github.com
Issue Tracking
https://github.com/open-telemetry/opentelemetry-cpp/pull/4078
Source: security-advisories@github.com
Issue Tracking
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58
Source: security-advisories@github.com
Vendor Advisory Not Applicable
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Vendor Advisory Not Applicable

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.2%
11th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

opentelemetry