Medium severity5.3NVD Advisory· Published Jun 12, 2026· Updated Jun 16, 2026
CVE-2026-44967
CVE-2026-44967
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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Affected products
3(expand)+ 1 more
- (no CPE)
- (no CPE)range: <1.27.0
Patches
Vulnerability mechanics
References
4- github.com/open-telemetry/opentelemetry-cpp/security/advisories/GHSA-5qhm-4rfp-qqvjnvdVendor Advisory
- github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58nvdVendor AdvisoryNot Applicable
- github.com/open-telemetry/opentelemetry-cpp/issues/3958nvdIssue Tracking
- github.com/open-telemetry/opentelemetry-cpp/pull/4078nvdIssue Tracking
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