Vulnerability in go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp (CVE-2026-39882)
Summary
Vulnerability in go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp (CVE-2026-39882). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.43.0 or later.
Original description
The description as published by the source.
The OTLP HTTP exporters (traces, metrics, and logs) do not limit the size of the HTTP response body read from the collector. A malicious or misconfigured collector can send a large response body, leading to excessive memory consumption and potential process termination (OOM).
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-39882 has been found in go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: upgrade go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp to 1.43.0 or later.
If unsure, ask your IT team or search "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp CVE-2026-39882" on the vendor's site.
CVE-2026-39882 (go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp) — CWE-789 / CVSS v3 5.3
Attack vector: adjacent-network / unauthenticated / no user interaction
Patched: 1.43.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-789) exists in go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp.
Check the vendor advisory for the affected versions of go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp.
Severity: Medium (CVSS 5.3/10). Risk of unauthorized operations or information disclosure.
Update to 1.43.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttpを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp to 1.43.0ステージング環境で 1.43.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-39882 golang-opentelemetry-otel
- Ubuntu UBUNTU-CVE-2026-39882 golang-opentelemetry-otel
References
- advisory security-advisories@github.com
- advisory nvd.nist.gov
- package github.com
- patch security-advisories@github.com
- web github.com