{"cve":"CVE-2026-39882","nvd":{"published":"2026-04-08T21:17:00.547","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.3},"cwes":["CWE-789"],"references":["https://github.com/open-telemetry/opentelemetry-go/pull/8108","https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58"],"products":["opentelemetry:opentelemetry"],"source":"nvd","synced_at":"2026-10-19T22:28:59.047572785+00:00"},"epss":{"cve":"CVE-2026-39882","score":0.0019,"percentile":0.08707,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w8rr-5gcm-pp58","url":"https://osv.dev/vulnerability/GHSA-w8rr-5gcm-pp58","summary":"opentelemetry-go: OTLP HTTP exporters read unbounded HTTP response bodies","modified":"2026-09-10T03:51:03.562742514Z","packages":[{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","ranges":["<1.43.0"],"fixed":["1.43.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp","ranges":["<1.43.0"],"fixed":["1.43.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp","ranges":["<0.19.0"],"fixed":["0.19.0"]}]},{"id":"GO-2026-4985","url":"https://osv.dev/vulnerability/GO-2026-4985","summary":"Oversized OTLP HTTP response bodies can cause memory exhaustion in go.opentelemetry.io/otel/exporters/otlp","modified":"2026-05-27T14:44:16.320277238Z","packages":[{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp","ranges":["<0.19.0"],"fixed":["0.19.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp","ranges":["<1.43.0"],"fixed":["1.43.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","ranges":["<1.43.0"],"fixed":["1.43.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}