Vulnerability in github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension (CVE-2026-42602)
Summary
Vulnerability in github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension (CVE-2026-42602). Data can be tampered with by attackers. Exploitable via POST /v1/traces.
Original description
The description as published by the source.
Authenticate method auth bypass in github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension
Source: NIST National Vulnerability Database NVD GitHub Advisory
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-2026-42602 has been found in github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension.
Attackers can target a specific entry point like POST /v1/traces over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 8.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension CVE-2026-42602" on the vendor's site.
CVE-2026-42602 (github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension) — CWE-208 / CVSS v3 8.1
Attack vector: remote (network-reachable) / no user interaction
Attack surface: POST /v1/traces / azureauthextension / Authenticate / Host
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-208) exists in github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension. Attackers reach the vulnerable code path via POST /v1/traces.
Check the vendor advisory for the affected versions of github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension. Attack surface: POST /v1/traces / azureauthextension / Authenticate / Host.
Severity: High (CVSS 8.1/10). Data can be tampered with by attackers.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual POST /v1/traces requests with malformed payloads or SQL meta-characters. Audit SBOM/dependencies 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
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで github.com/open-telemetry/opentelemetry-collector-contrib/extension/azureauthextension を使っているサービスとバージョンを洗い出す。
-
2Hunt for indicators of compromise detect
grep 'POST /v1/traces' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
POST /v1/tracesへの異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Post-deployment verification verify
Replay attack against POST /v1/traces on staging to confirm patch closes the vector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 Step 2 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- web github.com