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CVE-2026-42455
Cross-Site Scripting (XSS) in CVE-2026-42455 (CVE-2026-42455)
Summary
cross-site scripting in CVE-2026-42455 (CVE-2026-42455). Risk of unauthorized operations or information disclosure. Exploitable via `POST /api/v1/archives/`.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-42455** has been found in CVE-2026-42455.
Attackers can target a specific entry point like `POST /api/v1/archives/` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2026-42455 CVE-2026-42455" on the vendor's site.
CVE-2026-42455 (CVE-2026-42455) — CWE-79 /
Attack surface: POST /api/v1/archives/ / GET /api/v1/archives/
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
**Cross-site scripting (XSS)** (CWE-79) exists in CVE-2026-42455. Attackers reach the vulnerable code path via `POST /api/v1/archives/` without authentication.
📍 Affected scope
CVE-2026-42455 — . Attack surface: POST /api/v1/archives/ / GET /api/v1/archives/.
🔥 Severity
Severity: ?. 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 /api/v1/archives/` 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 /api/v1/archives/' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで `POST /api/v1/archives/` 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 /api/v1/archives/ 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。