High
Security advisory
curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-9586
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 09:50 UTC · Revision 1
Source evidence
curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.
osv:CVE-2016-9586
Complete source record
{
"id": "9e17566217f2be66e82f2268bfe04259369ce212451f405a1b8615528d3cc4a0",
"url": "https://osv.dev/vulnerability/CVE-2016-9586",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-9586",
"summary": "curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.",
"evidence": "osv:CVE-2016-9586",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-9586",
"aliases": [
"CURL-CVE-2016-9586",
"CVE-2016-9586"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/curl/curl",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "95c717bbd9c327c38b4efcc37d5cda29b8ee2a36"
}
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{
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-9586.json"
}
}
],
"modified": "2026-10-20T10:48:05.201108638Z",
"provider": "osv",
"references": [
"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E",
"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E",
"https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html",
"https://access.redhat.com/errata/RHSA-2018:3558",
"https://curl.haxx.se/docs/adv_20161221A.html",
"https://security.gentoo.org/glsa/201701-47",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9586",
"https://github.com/curl/curl/commit/curl-7_51_0-162-g3ab3c16"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-9586",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 380022,
"published_at": "2018-04-23T18:29:00.537+00:00"
}