FKIE_CVE-2026-67550

Vulnerability from fkie_nvd - Published: 2026-07-30 20:18 - Updated: 2026-07-31 23:17
Severity
5.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
Summary
re2 provides Node.js bindings for Google's 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.
References
security-advisories@github.comhttps://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d
security-advisories@github.comhttps://github.com/uhop/node-re2/releases/tag/1.25.2
security-advisories@github.comhttps://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj
Impacted products
Vendor Product Version
To clipboard 

{
  "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."
    }
  ],
  "id": "CVE-2026-67550",
  "lastModified": "2026-07-31T23:17:26.660",
  "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": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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