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CVE-2026-56234
medium
CVSS 5.3
Vulnerability in CVE-2026-56234 (CVE-2026-56234)
Summary
vulnerability in CVE-2026-56234 (CVE-2026-56234). Risk of unauthorized operations or information disclosure. Exploitable via `POST /functions/v1/private/validate_password_compliance`.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-56234** has been found in CVE-2026-56234.
Attackers can target a specific entry point like `POST /functions/v1/private/validate_password_compliance` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2026-56234 CVE-2026-56234" on the vendor's site.
CVE-2026-56234 (CVE-2026-56234) — CWE-307 / CVSS v3 5.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: POST /functions/v1/private/validate_password_compliance
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.
❓ What is the problem
**A vulnerability** (CWE-307) exists in CVE-2026-56234. Attackers reach the vulnerable code path via `POST /functions/v1/private/validate_password_compliance` without authentication.
📍 Affected scope
CVE-2026-56234 — . Attack surface: POST /functions/v1/private/validate_password_compliance.
🔥 Severity
Severity: Medium (CVSS 5.3/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual `POST /functions/v1/private/validate_password_compliance` requests with malformed payloads or SQL meta-characters. Audit SBOM/dependencies to find affected services.
Response Actions (7 steps)
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.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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3Hunt for indicators of compromise detect
grep 'POST /functions/v1/private/validate_password_compliance' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで `POST /functions/v1/private/validate_password_compliance` 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。
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7Post-deployment verification verify
Replay attack against POST /functions/v1/private/validate_password_compliance 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 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://github.com/Cap-go/capgo/security/advisories/GHSA-f6v3-xv4g-79h5
- web https://www.vulncheck.com/advisories/capgo-password-spraying-via-public-key-accessible-credential-validation-endpoint
- web https://nvd.nist.gov/vuln/detail/CVE-2026-56234
- web https://github.com/advisories/GHSA-74wf-7q7r-hjxr