CVE-2026-44967 | BDVDB-2026-339939 Detail
open-telemetryopentelemetry-cpp
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: adjacent.
Weaknesses#
- CWE-789 Memory Allocation with Excessive Size Value
References#
- https://github.com/open-telemetry/opentelemetry-cpp/security/advisories/GHSA-5qhm-4rfp-qqvj
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58
- https://github.com/open-telemetry/opentelemetry-cpp/issues/3958
- https://github.com/open-telemetry/opentelemetry-cpp/pull/4078
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.