UBUNTU-CVE-2026-111497 (CVE-2026-111497)

Vulnerability from osv_ubuntu – Published: 2026-10-23 00:00 – Updated: 2026-10-28 17:50 – Source website
VLAI
Details

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. Users 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.

Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
N/A (UNKNOWN)
high
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.0.3-1ubuntu1~16.04.2+esm1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.0.3-1ubuntu1~16.04.2+esm1"
          },
          {
            "binary_name": "python-brotli",
            "binary_version": "1.0.3-1ubuntu1~16.04.2+esm1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.0.3-1ubuntu1~16.04.2+esm1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.0.3-1ubuntu1~16.04.2+esm1?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.3-1ubuntu1~16.04.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.0+dfsg-1",
        "0.3.0+dfsg-1",
        "0.3.0+dfsg-2",
        "0.3.0+dfsg-2ubuntu1",
        "1.0.3-1ubuntu1~16.04.1",
        "1.0.3-1ubuntu1~16.04.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.0.3-1ubuntu1.3+esm1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.0.3-1ubuntu1.3+esm1"
          },
          {
            "binary_name": "python-brotli",
            "binary_version": "1.0.3-1ubuntu1.3+esm1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.0.3-1ubuntu1.3+esm1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.0.3-1ubuntu1.3+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.3-1ubuntu1.3+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.0-1build1",
        "1.0.2-2",
        "1.0.2-3",
        "1.0.3-1ubuntu1",
        "1.0.3-1ubuntu1.2",
        "1.0.3-1ubuntu1.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.0.7-6ubuntu0.1+esm1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.0.7-6ubuntu0.1+esm1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.0.7-6ubuntu0.1+esm1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.0.7-6ubuntu0.1+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.7-6ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.7-2",
        "1.0.7-2build1",
        "1.0.7-4",
        "1.0.7-5",
        "1.0.7-6",
        "1.0.7-6build1",
        "1.0.7-6ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libnode64",
            "binary_version": "10.19.0~dfsg-3ubuntu1.6+esm2"
          },
          {
            "binary_name": "nodejs",
            "binary_version": "10.19.0~dfsg-3ubuntu1.6+esm2"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@10.19.0~dfsg-3ubuntu1.6+esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "10.15.2~dfsg-2ubuntu1",
        "10.17.0~dfsg-2ubuntu4",
        "10.17.0~dfsg-2ubuntu6",
        "10.19.0~dfsg-3ubuntu1",
        "10.19.0~dfsg-3ubuntu1.1",
        "10.19.0~dfsg-3ubuntu1.2",
        "10.19.0~dfsg-3ubuntu1.3",
        "10.19.0~dfsg-3ubuntu1.5",
        "10.19.0~dfsg-3ubuntu1.6",
        "10.19.0~dfsg-3ubuntu1.6+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.0.9-2ubuntu0.1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.0.9-2ubuntu0.1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.0.9-2ubuntu0.1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.0.9-2ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.9-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.9-2build3",
        "1.0.9-2build4",
        "1.0.9-2build5",
        "1.0.9-2build6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.1.0-2ubuntu0.1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.1.0-2ubuntu0.1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.1.0-2ubuntu0.1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.1.0-2ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.9-2build8",
        "1.1.0-1",
        "1.1.0-2~build1",
        "1.1.0-2",
        "1.1.0-2build1",
        "1.1.0-2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.2.0-4ubuntu0.1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.2.0-4ubuntu0.1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.2.0-4ubuntu0.1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.2.0-4ubuntu0.1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.0-4ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.0-3build1",
        "1.2.0-4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "brotli",
            "binary_version": "1.2.0-3ubuntu0.1"
          },
          {
            "binary_name": "libbrotli1",
            "binary_version": "1.2.0-3ubuntu0.1"
          },
          {
            "binary_name": "python3-brotli",
            "binary_version": "1.2.0-3ubuntu0.1"
          }
        ],
        "priority_reason": "CISA-KEV"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "brotli",
        "purl": "pkg:deb/ubuntu/brotli@1.2.0-3ubuntu0.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.0-3ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0-2build5",
        "1.1.0-2build6",
        "1.2.0-3",
        "1.2.0-3build1"
      ]
    }
  ],
  "aliases": [],
  "details": "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. Users 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.",
  "id": "UBUNTU-CVE-2026-111497",
  "modified": "2026-10-28T17:50:35Z",
  "published": "2026-10-23T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-111497"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-111497"
    },
    {
      "type": "REPORT",
      "url": "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"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8956-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8956-2"
    }
  ],
  "related": [
    "USN-8956-1",
    "USN-8956-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "high",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-111497"
  ]
}



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