Vulnerability Details CVE-2026-39882
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer 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 1.43.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.5%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-39882
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cpe:2.3:a:opentelemetry:opentelemetry:-
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cpe:2.3:a:opentelemetry:opentelemetry:0.1.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.1.1
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cpe:2.3:a:opentelemetry:opentelemetry:0.1.2
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cpe:2.3:a:opentelemetry:opentelemetry:0.10.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.11.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.12.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.13.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.14.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.15.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.16.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.17.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.18.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.19.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.2.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.2.1
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cpe:2.3:a:opentelemetry:opentelemetry:0.2.1.1
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cpe:2.3:a:opentelemetry:opentelemetry:0.2.2
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cpe:2.3:a:opentelemetry:opentelemetry:0.2.3
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cpe:2.3:a:opentelemetry:opentelemetry:0.20.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.3.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.4.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.4.1
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cpe:2.3:a:opentelemetry:opentelemetry:0.4.2
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cpe:2.3:a:opentelemetry:opentelemetry:0.4.3
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cpe:2.3:a:opentelemetry:opentelemetry:0.43.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.44.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.45.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.46.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.5.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.6.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.7.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.8.0
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cpe:2.3:a:opentelemetry:opentelemetry:0.9.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.0.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.0.1
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cpe:2.3:a:opentelemetry:opentelemetry:1.1.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.10.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.11.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.11.1
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cpe:2.3:a:opentelemetry:opentelemetry:1.11.2
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cpe:2.3:a:opentelemetry:opentelemetry:1.12.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.13.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.14.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.15.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.15.1
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cpe:2.3:a:opentelemetry:opentelemetry:1.16.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.17.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.18.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.19.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.2.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.20.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.21.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.22.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.23.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.23.1
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cpe:2.3:a:opentelemetry:opentelemetry:1.24.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.25.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.26.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.27.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.28.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.29.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.3.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.30.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.31.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.32.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.33.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.34.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.35.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.36.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.37.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.38.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.39.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.4.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.4.1
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cpe:2.3:a:opentelemetry:opentelemetry:1.40.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.41.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.42.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.5.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.6.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.6.1
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cpe:2.3:a:opentelemetry:opentelemetry:1.6.2
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cpe:2.3:a:opentelemetry:opentelemetry:1.6.3
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cpe:2.3:a:opentelemetry:opentelemetry:1.7.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.8.0
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cpe:2.3:a:opentelemetry:opentelemetry:1.9.0