{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.24.0"
              },
              {
                "fixed": "1.71.0"
              },
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.3.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "6284822a2e30d9a8497ba7e07bf3f506808912f2"
            },
            {
              "fixed": "47389586f8aa77c83245173793f4d44ed1d6c3a8"
            },
            {
              "introduced": "190be0667cf1f7b39bed2c96760f08a6295b652b"
            },
            {
              "fixed": "83d85826595641bb2f23c6108f2e031fcd5cd505"
            }
          ],
          "repo": "https://github.com/aws/aws-lc",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "AMZN",
    "cwe_ids": [
      "CWE-299"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4428.json"
  },
  "details": "A logic error in CRL distribution point validation in AWS-LC before 1.71.0 causes partitioned CRLs to be incorrectly rejected as out of scope, which allows  a revoked certificate to bypass certificate revocation checks.\n\nTo remediate this issue, users should upgrade to AWS-LC 1.71.0 or AWS-LC-FIPS-3.3.0.",
  "id": "CVE-2026-4428",
  "modified": "2026-07-08T05:37:25.980766738Z",
  "published": "2026-03-19T20:37:53.851Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-010-AWS/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4428.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4428"
    },
    {
      "type": "FIX",
      "url": "https://github.com/aws/aws-lc/releases/tag/v1.71.0"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CRL Distribution Point Scope Check Logic Error in AWS-LC"
}