A network man-in-the-middle between nats-sync and the BOSH director can steal the director...
Summary
Vulnerability reported (CVE-2026-41859). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 282.1.9 or later.
Original description
The description as published by the source.
A network man-in-the-middle between nats-sync and the BOSH director can steal the director credentials (Basic auth header or UAA client secret) and can tamper with the VM list that is written into the NATS authorization file. Stolen credentials grant administrative director access. UsersSync#bosh_api_response_body builds a Net::HTTP client with verify_mode = OpenSSL::SSL::VERIFY_NONE for every director call (/info, /deployments, /deployments//vms).
Affected versions:
- BOSH: all versions prior to v282.1.9 (inclusive); fixed in v282.1.9 or later
Source: GitHub Security Advisories (Global) 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-2026-41859 has been found.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: upgrade the affected software to 282.1.9 or later.
If unsure, ask your IT team or search "CVE-2026-41859" on the vendor's site.
CVE-2026-41859 — CWE-295 / CVSS v3 7.8
Attack vector: local / no user interaction
Patched: 282.1.9 — 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-295) has been reported.
Check the vendor advisory for the affected versions.
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.
Update to 282.1.9.
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. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。
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2Apply patch patch
Upgrade to 282.1.9ステージング環境で 282.1.9 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。
References
- web nvd.nist.gov
- web cloudfoundry.org
- web github.com
- web security@vmware.com