CVE-2026-92391
Full vulnerability record from the local CVENow database.
Description
A deeply nested multipart MIME structure constructed via the public API causes a stack overflow in libcurl during normal cleanup operations. An excessive recursion depth within `curl_mime_free` leads to unbounded stack frame allocation during structure traversal, ultimately crashing the host process.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Awaiting Analysis
Source identifier
2499f714-1537-4658-8207-48ae4bb9eae9
Published
2026-10-20 21:17:21.920000
Last modified
2026-10-22 17:21:57.293000
View original CVE JSON
{
"id": "CVE-2026-92391",
"sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9",
"published": "2026-10-20T21:17:21.920",
"lastModified": "2026-10-22T17:21:57.293",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A deeply nested multipart MIME structure constructed via the public API causes\na stack overflow in libcurl during normal cleanup operations. An excessive\nrecursion depth within `curl_mime_free` leads to unbounded stack frame\nallocation during structure traversal, ultimately crashing the host process."
}
],
"affected": [
{
"source": "2499f714-1537-4658-8207-48ae4bb9eae9",
"affectedData": [
{
"vendor": "curl",
"product": "curl",
"defaultStatus": "unaffected",
"versions": [
{
"version": "8.22.0",
"lessThanOrEqual": "8.22.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.21.0",
"lessThanOrEqual": "8.21.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.20.0",
"lessThanOrEqual": "8.20.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.19.0",
"lessThanOrEqual": "8.19.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.18.0",
"lessThanOrEqual": "8.18.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.17.0",
"lessThanOrEqual": "8.17.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.16.0",
"lessThanOrEqual": "8.16.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.15.0",
"lessThanOrEqual": "8.15.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.14.1",
"lessThanOrEqual": "8.14.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.14.0",
"lessThanOrEqual": "8.14.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.13.0",
"lessThanOrEqual": "8.13.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.12.1",
"lessThanOrEqual": "8.12.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.12.0",
"lessThanOrEqual": "8.12.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.11.1",
"lessThanOrEqual": "8.11.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.11.0",
"lessThanOrEqual": "8.11.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.10.1",
"lessThanOrEqual": "8.10.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.10.0",
"lessThanOrEqual": "8.10.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.9.1",
"lessThanOrEqual": "8.9.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.9.0",
"lessThanOrEqual": "8.9.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.8.0",
"lessThanOrEqual": "8.8.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.7.1",
"lessThanOrEqual": "8.7.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.7.0",
"lessThanOrEqual": "8.7.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.6.0",
"lessThanOrEqual": "8.6.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.5.0",
"lessThanOrEqual": "8.5.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.4.0",
"lessThanOrEqual": "8.4.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.3.0",
"lessThanOrEqual": "8.3.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.2.1",
"lessThanOrEqual": "8.2.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.2.0",
"lessThanOrEqual": "8.2.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.1.2",
"lessThanOrEqual": "8.1.2",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.1.1",
"lessThanOrEqual": "8.1.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.1.0",
"lessThanOrEqual": "8.1.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.0.1",
"lessThanOrEqual": "8.0.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.0.0",
"lessThanOrEqual": "8.0.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.88.1",
"lessThanOrEqual": "7.88.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.88.0",
"lessThanOrEqual": "7.88.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.87.0",
"lessThanOrEqual": "7.87.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.86.0",
"lessThanOrEqual": "7.86.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.85.0",
"lessThanOrEqual": "7.85.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.84.0",
"lessThanOrEqual": "7.84.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.83.1",
"lessThanOrEqual": "7.83.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.83.0",
"lessThanOrEqual": "7.83.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.82.0",
"lessThanOrEqual": "7.82.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.81.0",
"lessThanOrEqual": "7.81.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.80.0",
"lessThanOrEqual": "7.80.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.79.1",
"lessThanOrEqual": "7.79.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.79.0",
"lessThanOrEqual": "7.79.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.78.0",
"lessThanOrEqual": "7.78.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.77.0",
"lessThanOrEqual": "7.77.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.76.1",
"lessThanOrEqual": "7.76.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.76.0",
"lessThanOrEqual": "7.76.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.75.0",
"lessThanOrEqual": "7.75.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.74.0",
"lessThanOrEqual": "7.74.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.73.0",
"lessThanOrEqual": "7.73.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.72.0",
"lessThanOrEqual": "7.72.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.71.1",
"lessThanOrEqual": "7.71.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.71.0",
"lessThanOrEqual": "7.71.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.70.0",
"lessThanOrEqual": "7.70.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.69.1",
"lessThanOrEqual": "7.69.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.69.0",
"lessThanOrEqual": "7.69.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.68.0",
"lessThanOrEqual": "7.68.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.67.0",
"lessThanOrEqual": "7.67.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.66.0",
"lessThanOrEqual": "7.66.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.65.3",
"lessThanOrEqual": "7.65.3",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.65.2",
"lessThanOrEqual": "7.65.2",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.65.1",
"lessThanOrEqual": "7.65.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.65.0",
"lessThanOrEqual": "7.65.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.64.1",
"lessThanOrEqual": "7.64.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.64.0",
"lessThanOrEqual": "7.64.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.63.0",
"lessThanOrEqual": "7.63.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.62.0",
"lessThanOrEqual": "7.62.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.61.1",
"lessThanOrEqual": "7.61.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.61.0",
"lessThanOrEqual": "7.61.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.60.0",
"lessThanOrEqual": "7.60.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.59.0",
"lessThanOrEqual": "7.59.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.58.0",
"lessThanOrEqual": "7.58.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.57.0",
"lessThanOrEqual": "7.57.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.56.1",
"lessThanOrEqual": "7.56.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.56.0",
"lessThanOrEqual": "7.56.0",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://curl.se/docs/CVE-2026-92391.html",
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
},
{
"url": "https://curl.se/docs/CVE-2026-92391.json",
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
},
{
"url": "https://hackerone.com/reports/4024222",
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
}
]
}