The function "Token& Scanner::peek" in scanner.cpp in yaml-cpp 0.5.3 and earlier allows remote attackers to cause a denial of service (assertion failure and application exit) via a '!2' string.
{
"license": "CC-BY-4.0",
"sources": [
{
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2017-11692",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2017-11692",
"published": "2017-07-30T17:29:00.240Z",
"id": "CVE-2017-11692",
"imported": "2026-07-17T21:23:19.776Z",
"modified": "2026-06-17T01:02:13.053Z",
"database_specific": {
"status": "Modified"
}
}
]
}