{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "renovate",
        "purl": "pkg:apk/cleanstart/renovate"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "43.177.9-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "renovate",
        "purl": "pkg:apk/cleanstart/renovate"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "43.180.0-r1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "CVE-2026-67550 affects multiple packages. re2 provides Node. See references for individual vulnerability details.",
  "id": "CLEANSTART-2026-AX56831",
  "modified": "2026-10-19T12:56:40Z",
  "published": "2026-10-20T00:43:19.762343Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-AX56831.json"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-67550"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67550"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "re2 provides Node",
  "upstream": [
    "CVE-2026-67550"
  ]
}

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "node-re2",
          "vendor": "uhop",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.25.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "re2 provides Node.js bindings for Google\u0027s RE2 regular expression engine. Prior to 1.25.2, re2 validates lastIndex against the UTF-8 byte length of a subject but uses it as a UTF-16 code-unit offset in exec, test, match, replace, and split, allowing an attacker-influenced lastIndex on a non-ASCII subject to trigger an out-of-bounds heap read and an uncatchable process crash, with limited heap information disclosure in some cases. This issue is fixed in 1.25.2."
    },
    {
      "lang": "es",
      "value": "re2 proporciona enlaces de Node.js para el motor de expresiones regulares RE2 de Google. Antes de la versi\u00f3n 1.25.2, re2 valida \u2019lastIndex\u2019 contra la longitud en bytes UTF-8 de un sujeto, pero lo utiliza como un desplazamiento de unidad de c\u00f3digo UTF-16 en \u2019exec\u2019, \u2019test\u2019, \u2019match\u2019, \u2019replace\u2019 y \u2019split\u2019, permitiendo que un \u2019lastIndex\u2019 influenciado por un atacante en un sujeto no ASCII desencadene una lectura de pila fuera de l\u00edmites y un fallo de proceso irrecuperable, con revelaci\u00f3n de informaci\u00f3n limitada de la pila en algunos casos. Este problema se ha solucionado en la versi\u00f3n 1.25.2."
    }
  ],
  "id": "CVE-2026-67550",
  "lastModified": "2026-10-23T22:10:00.160",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-67550",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-31T23:06:52.923503Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-30T20:18:15.030",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/uhop/node-re2/releases/tag/1.25.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.25.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "re2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.25.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-67550"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-31T16:53:16Z",
    "nvd_published_at": "2026-07-30T20:18:15Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\n`re2` validates the user-settable `lastIndex` against the subject\u0027s **UTF-8 byte length** but then uses it as a **UTF-16 code-unit count** to walk the subject buffer, with no bounds check. For any non-ASCII subject, the byte length is larger than the true character count, so a `lastIndex` between those two values passes validation while pointing past the end of the buffer. The subsequent walk reads out of bounds. With a large subject the read marches into unmapped memory and the process dies with **SIGABRT/SIGSEGV** \u2014 an uncatchable crash (`try/catch` cannot stop it), i.e. a denial of service for any worker/process that runs the match. In some cases the out-of-bounds bytes are copied into the returned value (a bounded, best-effort heap information leak).\n\n## Root cause\n\nThe subject wrapper stores the UTF-8 **byte** length in `StrVal::length`:\n\n- `lib/addon.cc:200` `auto argLength = utf8Length(s, isolate);` \u2014 UTF-8 **byte** count\n- `lib/addon.cc:209` `lastStringValue.reset(buffer, argSize, argLength, startFrom, false, isAscii);`\n\n`setIndex` then validates the (UTF-16) `lastIndex` against that byte length and walks the buffer by character count:\n\n```cpp\n// lib/addon.cc:229\nvoid StrVal::setIndex(size_t newIndex) {\n    isValidIndex = newIndex \u003c= length;   // length == UTF-8 BYTE length, not UTF-16 length\n    if (!isValidIndex) { index = newIndex; byteIndex = 0; return; }\n    ...\n    // addon.cc:263\n    byteIndex = index \u003c newIndex\n        ? getUtf16PositionByCounter(data, byteIndex, newIndex - index)\n        : getUtf16PositionByCounter(data, 0, newIndex);\n    index = newIndex;\n}\n```\n\n`getUtf16PositionByCounter` reads `data[from]` and advances by the UTF-8 char size with **no check of `from` against the buffer size**:\n\n```cpp\n// lib/wrapped_re2.h:264\ninline size_t getUtf16PositionByCounter(const char *data, size_t from, size_t n) {\n    for (; n \u003e 0; --n) {\n        size_t s = getUtf8CharSize(data[from]);   // \u003c-- OOB read once `from` passes the buffer end\n        from += s;\n        if (s == 4 \u0026\u0026 n \u003e= 2) --n;\n    }\n    return from;\n}\n```\n\n`lastIndex` is user-settable to any positive integer (capped only at `\u003e= 0`, no upper bound):\n\n```cpp\n// lib/accessors.cc:166\nNAN_SETTER(WrappedRE2::SetLastIndex) {\n    ...\n    int n = value-\u003eNumberValue(...).FromMaybe(0);\n    re2-\u003elastIndex = n \u003c= 0 ? 0 : n;   // no upper bound relative to the subject\n}\n```\n\nFor an ASCII subject the byte length equals the UTF-16 length, so the guard is correct \u2014 this only triggers on non-ASCII subjects. The out-of-bounds read happens inside `prepareArgument` for any `global`/`sticky` regex, reached by `exec`, `test`, `String.prototype.match`, `replace`, and `split`.\n\n## Proof of concept\n\n**Minimal (AddressSanitizer, deterministic OOB read):**\n\n```js\nconst RE2 = require(\u0027re2\u0027);\nconst re = new RE2(\u0027a\u0027, \u0027y\u0027);   // sticky; \u0027g\u0027 also works\nre.lastIndex = 3;               // 3 \u003c= byteLen(4) passes the guard; only 2 real chars exist\nre.exec(\u0027\u00e9\u00e9\u0027);                  // U+00E9 = 2 bytes each\n```\n\nBuilt with `-fsanitize=address`, this aborts with:\n\n```\nERROR: AddressSanitizer: heap-buffer-overflow ... READ of size 1\n  #0 getUtf16PositionByCounter   wrapped_re2.h:268\n  #1 StrVal::reset               addon.cc:277\n  #2 WrappedRE2::prepareArgument addon.cc:209\n  #3 WrappedRE2::Exec            exec.cc:17\n```\n\nThe overflowed region is the subject buffer allocated by `node::Buffer::New` at `addon.cc:205`.\n\n**Real-world impact on the shipped prebuilt binary (no ASAN) \u2014 uncatchable crash:**\n\n```js\nconst RE2 = require(\u0027re2\u0027);\nconst s = \u0027\u4e2d\u0027.repeat(40000000);        // UTF-16 length 40M, UTF-8 bytes 120M\nconst re = new RE2(\u0027a\u0027, \u0027y\u0027);\nre.lastIndex = Buffer.byteLength(s) - 1; // passes the byte-length guard, far exceeds real char count\nre.exec(s);                              // walks into unmapped memory -\u003e SIGSEGV (exit 139)\n```\n\n`try { ... } catch (e) {}` around the call does **not** prevent termination \u2014 it is a native fault, not a JS exception. Validated on a clean `npm install re2@1.25.1` (latest): stock prebuilt \u2192 SIGSEGV; ASAN build \u2192 the heap-buffer-overflow read above.\n\n## Impact\n\n- **Denial of service (primary):** an uncatchable native crash that terminates the Node process/worker. Reachable remotely and without authentication wherever an application (a) uses a `global` or `sticky` `RE2`, (b) applies it to a non-ASCII subject, and (c) sets `lastIndex` from attacker-influenced data (e.g. resuming a scan/pagination at a client-supplied offset).\n- **Information disclosure (secondary, best-effort):** the out-of-bounds `byteIndex` can cause adjacent heap bytes to be copied into the returned value (e.g. the leading segment of a `replace` result). This is bounded and unreliable \u2014 the subject buffer is `calloc`-allocated (zero-filled) and the over-read distance depends on interpreting out-of-bounds bytes as UTF-8 sizes \u2014 so it is noted for completeness, not as a dependable primitive.\n\nThis is distinct from GHSA-8hcv-x26h-mcgp (the global `replace()` output-amplification abort), which was fixed in 1.25.1. This `lastIndex` out-of-bounds read is a separate defect and remains present in 1.25.1.\n\n## Suggested fix\n\nTwo independent hardenings; either closes the crash, both is safest:\n\n1. **Bound the walk** so it can never read past the buffer:\n\n```cpp\ninline size_t getUtf16PositionByCounter(const char *data, size_t size, size_t from, size_t n) {\n    for (; n \u003e 0 \u0026\u0026 from \u003c size; --n) {\n        size_t s = getUtf8CharSize(data[from]);\n        from += s;\n        if (s == 4 \u0026\u0026 n \u003e= 2) --n;\n    }\n    return from \u003e size ? size : from;\n}\n```\n(thread `size` through the two call sites in `StrVal::setIndex`).\n\n2. **Validate `lastIndex` against the true UTF-16 length**, not the UTF-8 byte length \u2014 e.g. store `s-\u003eLength()` (UTF-16 units) as the value compared in `isValidIndex = newIndex \u003c= \u003cutf16Length\u003e`, so an out-of-range `lastIndex` takes the existing `!isValidIndex` early-return path.\n\n## Resolution\n\nFixed in re2 1.25.2.\n\n`lastIndex` is now validated against the subject\u0027s UTF-16 length instead of its\nUTF-8 byte length (`lib/addon.cc`), so an out-of-range `lastIndex` is rejected\nbefore the buffer is walked. As defense in depth, the code-unit walk\n(`getUtf16PositionByCounter` in `lib/wrapped_re2.h`) is now bounded by the\nbuffer size and can no longer read past the end.\n\n**Remediation:** upgrade to `re2@1.25.2` or later.\n\n**Workaround** (if you cannot upgrade): do not assign `lastIndex` from untrusted\ninput, or clamp it to the subject\u0027s string length (`str.length`) before calling\n`exec`/`test`/`match`/`replace`/`split` on a non-ASCII subject.",
  "id": "GHSA-ff84-5f28-78qj",
  "modified": "2026-07-31T16:53:16Z",
  "published": "2026-07-31T16:53:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67550"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/uhop/node-re2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/uhop/node-re2/releases/tag/1.25.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "re2: Out-of-bounds heap read in `exec`/`test`/`match` via attacker-influenced `lastIndex` on a non-ASCII subject \u2192 uncatchable process crash (DoS)"
}

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-re2",
            "binary_version": "1.10.5-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-re2",
        "purl": "pkg:deb/ubuntu/node-re2@1.10.5-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.10.4-1",
        "1.10.5-1",
        "1.10.5-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-re2",
            "binary_version": "1.17.3+~cs2.13.8-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-re2",
        "purl": "pkg:deb/ubuntu/node-re2@1.17.3+~cs2.13.8-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.15.9+~cs1.8.18-1",
        "1.15.9+~cs1.8.18-2",
        "1.16.0+~cs2.12.8-2",
        "1.17.1+~cs2.12.8-1",
        "1.17.2+~cs2.13.8-1",
        "1.17.3+~cs2.13.8-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-re2",
            "binary_version": "1.20.10+~cs2.13.13-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-re2",
        "purl": "pkg:deb/ubuntu/node-re2@1.20.10+~cs2.13.13-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.18.0+~cs2.13.8-1build1",
        "1.19.2+~cs2.13.13-1build1",
        "1.20.10+~cs2.13.13-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-re2",
            "binary_version": "1.26.1+~cs1.7.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "node-re2",
        "purl": "pkg:deb/ubuntu/node-re2@1.26.1+~cs1.7.0-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.23.3+~cs1.3.5-1",
        "1.25.0+~cs1.6.0-2",
        "1.26.1+~cs1.7.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-re2",
            "binary_version": "1.23.3+~cs1.3.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-re2",
        "purl": "pkg:deb/ubuntu/node-re2@1.23.3+~cs1.3.5-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.22.1+~cs1.3.5-1",
        "1.22.1+~cs1.3.5-1build2",
        "1.22.1+~cs1.3.5-1build3",
        "1.23.3+~cs1.3.5-1"
      ]
    }
  ],
  "aliases": [],
  "details": "re2 provides Node.js bindings for Google\u0027s RE2 regular expression engine. Prior to 1.25.2, re2 validates lastIndex against the UTF-8 byte length of a subject but uses it as a UTF-16 code-unit offset in exec, test, match, replace, and split, allowing an attacker-influenced lastIndex on a non-ASCII subject to trigger an out-of-bounds heap read and an uncatchable process crash, with limited heap information disclosure in some cases. This issue is fixed in 1.25.2.",
  "id": "UBUNTU-CVE-2026-67550",
  "modified": "2026-10-17T09:48:29Z",
  "published": "2026-07-30T20:18:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-67550"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-67550"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-67550"
  ]
}