{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.6.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c741f95e9050a1a4bed4b3aa7543bd3e024f6e56"
            }
          ],
          "repo": "https://github.com/awslabs/aws-c-event-stream",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xvjw-fjq5-68hf"
  ],
  "database_specific": {
    "cna_assigner": "AMZN",
    "cwe_ids": [
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5190.json"
  },
  "details": "Out-of-bounds write in the streaming decoder component in aws-c-event-stream before 0.6.0 might allow a third party operating a server to cause memory corruption leading to arbitrary code execution on a client application that processes crafted event-stream messages.\n\nTo remediate this issue, users should upgrade to version 0.6.0 or later.",
  "id": "CVE-2026-5190",
  "modified": "2026-07-08T05:39:04.684593560Z",
  "published": "2026-03-31T17:05:59.601Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-011-aws/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5190.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/awslabs/aws-c-event-stream/security/advisories/GHSA-xvjw-fjq5-68hf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5190"
    },
    {
      "type": "FIX",
      "url": "https://github.com/awslabs/aws-c-event-stream/releases/tag/v0.6.0"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "AWS C Event Stream Streaming Decoder Stack Buffer Overflow"
}