Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 10.8%
CVSS Severity
CVSS v3 Score 5.3
References
- https://github.com/open-telemetry/opentelemetry-cpp/issues/3958
- https://github.com/open-telemetry/opentelemetry-cpp/pull/4078
- 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-go/security/advisories/GHSA-w8rr-5gcm-pp58
Products affected by CVE-2026-44967
-
cpe:2.3:a:opentelemetry:opentelemetry:0.1.0
-
cpe:2.3:a:opentelemetry:opentelemetry:0.2.0
-
cpe:2.3:a:opentelemetry:opentelemetry:0.3.0
-
cpe:2.3:a:opentelemetry:opentelemetry:0.4.0
-
cpe:2.3:a:opentelemetry:opentelemetry:0.5.0
-
cpe:2.3:a:opentelemetry:opentelemetry:0.6.0
-
cpe:2.3:a:opentelemetry:opentelemetry:0.7.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.0.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.0.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.1.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.1.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.10.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.11.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.12.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.13.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.14.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.14.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.14.2
-
cpe:2.3:a:opentelemetry:opentelemetry:1.15.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.16.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.16.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.17.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.18.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.19.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.2.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.20.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.21.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.22.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.23.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.24.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.25.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.26.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.3.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.4.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.4.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.5.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.6.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.6.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.7.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.8.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.8.1
-
cpe:2.3:a:opentelemetry:opentelemetry:1.8.2
-
cpe:2.3:a:opentelemetry:opentelemetry:1.8.3
-
cpe:2.3:a:opentelemetry:opentelemetry:1.9.0
-
cpe:2.3:a:opentelemetry:opentelemetry:1.9.1