73 行
2.7 KiB
JSON
73 行
2.7 KiB
JSON
{
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"canonical_id": "nextjs--CVE-2026-27978",
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"system_id": "nextjs",
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"display_name": "Next.js",
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"category": "frameworks",
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"advisory_mode": "core",
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"title": "Next.js: null origin can bypass Server Actions CSRF checks",
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"summary": "## Summary\n`origin: null` was treated as a \"missing\" origin during Server Action CSRF validation. As a result, requests from opaque contexts (such as sandboxed iframes) could bypass origin verification instead of being validated as cross-origin requests.\n\n## Impact\nAn attacker could induce a victim browser to submit Server Actions from a sandboxed context, potentially executing state-changing actions with victim credentials (CSRF).\n\n## Patches\nFixed by treating `'null'` as an explicit origin value and enforcing host/origin checks unless `'null'` is explicitly allowlisted in `experimental.serverActions.allowedOrigins`. \n\n## Workarounds\nIf upgrade is not immediately possible:\n- Add CSRF tokens for sensitive Server Actions.\n- Prefer `SameSite=Strict` on sensitive auth cookies.\n- Do not allow `'null'` in `serverActions.allowedOrigins` unless intentionally required and additionally protected.",
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"published_at": "2026-03-17T15:30:14Z",
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"updated_at": "2026-03-17T15:46:43.484729Z",
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"severity": "medium",
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"cvss_score": 4.0,
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"exploit_status": "unknown",
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"source_confidence": "official",
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"official_source_url": "https://github.com/vercel/next.js/security/advisories/GHSA-mq59-m269-xvcx",
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"secondary_source_urls": [
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"https://github.com/vercel/next.js/commit/a27a11d78e748a8c7ccfd14b7759ad2b9bf097d8",
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"https://github.com/vercel/next.js",
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"https://github.com/vercel/next.js/releases/tag/v16.1.7"
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],
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"aliases": [
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"CVE-2026-27978",
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"GHSA-mq59-m269-xvcx"
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],
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"cve_ids": [
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"CVE-2026-27978"
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],
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"ghsa_ids": [
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"GHSA-mq59-m269-xvcx"
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],
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"osv_ids": [
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"GHSA-mq59-m269-xvcx"
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],
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"affected_versions": [
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"introduced=16.0.1, fixed<16.1.7"
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],
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"fixed_versions": [
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"16.1.7"
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],
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"package_name": "next",
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"render_markdown": true,
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"case_path": "07-framework-security/frameworks/nextjs/cases/nextjs-cve-2026-27978.md",
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"secure_code_topics": [
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"authz-server-side-recheck",
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"proxy-trust-boundary",
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"token-cookie-storage"
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],
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"status": "generated",
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"triage_reasons": [],
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"verification_status": "triage-manual",
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"verification_mode": "synthetic",
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"last_verified_at": null,
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"last_run_id": null,
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"evidence_bundle": null,
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"browser_evidence": {
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"required": false,
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"present": false,
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"refs": []
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},
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"repro_profile_id": "nextjs-proxy-boundary",
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"artifact_mode": "official-source",
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"blocked_reason": null,
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"metadata": {
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"source_names": [
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"OSV Next.js"
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],
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"source_kinds": [
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"osv-batch"
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],
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"candidate_count": 1
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}
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}
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