73 行
2.9 KiB
JSON
73 行
2.9 KiB
JSON
{
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"canonical_id": "nextjs--CVE-2026-27979",
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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: Unbounded postponed resume buffering can lead to DoS",
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"summary": "## Summary\nA request containing the `next-resume: 1` header (corresponding with a PPR resume request) would buffer request bodies without consistently enforcing `maxPostponedStateSize` in certain setups. The previous mitigation protected minimal-mode deployments, but equivalent non-minimal deployments remained vulnerable to the same unbounded postponed resume-body buffering behavior.\n\n## Impact\nIn applications using the App Router with Partial Prerendering capability enabled (via `experimental.ppr` or `cacheComponents`), an attacker could send oversized `next-resume` POST payloads that were buffered without consistent size enforcement in non-minimal deployments, causing excessive memory usage and potential denial of service.\n\n## Patches\nFixed by enforcing size limits across all postponed-body buffering paths and erroring when limits are exceeded. \n\n## Workarounds\nIf upgrade is not immediately possible:\n- Block requests containing the `next-resume` header, as this is never valid to be sent from an untrusted client.",
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"published_at": "2026-03-17T16:16:49Z",
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"updated_at": "2026-03-17T16:31:34.160932Z",
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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-h27x-g6w4-24gq",
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"secondary_source_urls": [
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"https://github.com/vercel/next.js/commit/c885d4825f800dd1e49ead37274dcd08cdd6f3f1",
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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-2026-27979",
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"GHSA-h27x-g6w4-24gq"
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],
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"cve_ids": [
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"CVE-2026-27979"
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],
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"ghsa_ids": [
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"GHSA-h27x-g6w4-24gq"
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],
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"osv_ids": [
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"GHSA-h27x-g6w4-24gq"
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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-2026-27979.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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