{
    "id": "CVE-2026-111497",
    "published": "2026-10-22 14:17:37",
    "last_modified": "2026-10-28 04:17:56",
    "cvss_score": null,
    "cvss_severity": null,
    "cvss_version": null,
    "cvss_vector": null,
    "cwe": "CWE-252",
    "description": "A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream.\n\n\n\n\n\nUsers need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.",
    "epss_score": "0.55483",
    "epss_percentile": "0.99030",
    "kev": 1,
    "kev_due": "2026-11-10",
    "has_exploit": 0,
    "updated_at": "2026-10-28 04:37:57",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-11-10."
    },
    "products": [],
    "kev_detail": {
        "cve_id": "CVE-2026-111497",
        "date_added": "2026-10-27",
        "due_date": "2026-11-10",
        "vendor": "Google",
        "product": "Brotli",
        "name": "Google Brotli Unchecked Return Value Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://github.com/andybalholm/brotli/releases/tag/v1.2.7",
        "https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high",
        "http://www.openwall.com/lists/oss-security/2026/10/23/25",
        "http://www.openwall.com/lists/oss-security/2026/10/24/6",
        "http://www.openwall.com/lists/oss-security/2026/10/26/12",
        "http://www.openwall.com/lists/oss-security/2026/10/26/13",
        "http://www.openwall.com/lists/oss-security/2026/10/26/16",
        "https://broccoli2shell.com",
        "https://github.com/advisories/GHSA-9v8h-qqgm-4m35",
        "https://github.com/dotnet/announcements/issues/494",
        "https://github.com/google/brotli/releases/tag/v1.0.10",
        "https://github.com/google/brotli/releases/tag/v1.1.1",
        "https://github.com/google/brotli/releases/tag/v1.2.1",
        "https://lists.debian.org/debian-lts-announce/2026/10/msg00049.html",
        "https://patchtheplanet.org/brotli",
        "https://www.aikido.dev/blog/node2shell-nodejs-brotli-rce-cve-2026-111497",
        "https://ellio.tech/en/blog/node2shell-cve-2026-111497-rce-on-stock-nodejs-builds/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111497"
    ]
}