Critical
Security advisory
Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-16842
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:04 UTC · Revision 1
Source evidence
Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.
osv:CVE-2018-16842
Complete source record
{
"id": "b2fcb9bf037eb4c0393c4a20b99f52b0adfea4270342a0279a8c3ec0378fd33f",
"url": "https://osv.dev/vulnerability/CVE-2018-16842",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-16842",
"summary": "Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.",
"evidence": "osv:CVE-2018-16842",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2018-16842",
"aliases": [
"CURL-CVE-2018-16842",
"CVE-2018-16842"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/curl/curl",
"type": "GIT",
"events": [
{
"introduced": "6e1a986e0f35cf36618bd88f42e14ea856b6951b"
},
{
"last_affected": "432eb5f5c254ee8383b2522ce597c9219877923e"
},
{
"fixed": "d530e92f59ae9bb2d47066c3c460b25d2ffeb211"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.14.1"
},
{
"last_affected": "7.61.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "d530e92f59ae9bb2d47066c3c460b25d2ffeb211"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"curl-7_61_1",
"curl-7_61_0",
"curl-7_60_0",
"curl-7_59_0",
"curl-7_58_0",
"curl-7_57_0",
"curl-7_56_1",
"curl-7_56_0",
"curl-7_55_1",
"curl-7_55_0",
"curl-7_54_1",
"curl-7_54_0",
"curl-7_53_1",
"curl-7_53_0",
"curl-7_52_1",
"curl-7_52_0",
"curl-7_51_0",
"curl-7_50_3",
"curl-7_50_2",
"curl-7_50_1",
"curl-7_50_0",
"curl-7_49_1",
"curl-7_49_0",
"curl-7_48_0",
"curl-7_47_1",
"curl-7_47_0",
"curl-7_46_0",
"curl-7_45_0",
"curl-7_44_0",
"curl-7_43_0",
"curl-7_42_0",
"curl-7_41_0",
"curl-7_40_0",
"curl-7_39_0",
"curl-7_38_0",
"curl-7_37_1",
"curl-7_37_0",
"curl-7_36_0",
"curl-7_35_0",
"curl-7_34_0",
"curl-7_33_0",
"curl-7_32_0",
"curl-7_31_0",
"curl-7_30_0",
"curl-7_29_0",
"curl-7_28_1",
"curl-7_28_0",
"curl-7_27_0",
"curl-7_26_0",
"curl-7_25_0",
"curl-7_23_1",
"curl-7_23_0",
"curl-7_22_0",
"curl-7_21_7",
"curl-7_21_6",
"curl-7_21_5",
"curl-7_21_4",
"curl-7_21_3",
"curl-7_21_2",
"curl-7_21_1",
"curl-7_21_0",
"curl-7_20_1",
"curl-7_20_0",
"curl-7_19_7",
"curl-7_19_6",
"curl-7_19_5",
"curl-7_19_4",
"curl-7_19_3",
"curl-7_19_2",
"curl-7_19_1",
"curl-7_19_0",
"curl-7_18_2",
"curl-7_18_1",
"curl-7_18_0",
"curl-7_17_1",
"curl-7_17_0",
"curl-7_17_0-preldapfix",
"curl-7_16_4",
"curl-7_16_3",
"curl-7_16_2",
"curl-7_16_1",
"curl-7_16_0",
"curl-7_15_6-prepipeline",
"curl-7_15_5",
"curl-7_15_4",
"curl-7_15_3",
"curl-7_15_2",
"curl-7_15_1",
"curl-7_15_0",
"curl-7_14_1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-16842.json",
"vanir_signatures": [
{
"id": "CVE-2018-16842-1bc8b2d6",
"digest": {
"threshold": 0.9,
"line_hashes": [
"168815568103819800894446565004067456537",
"228111618259869147888575535538857014400",
"339861644007337486665567803047408870040",
"172320610373815332630135197132714421772"
]
},
"source": "https://github.com/curl/curl/commit/d530e92f59ae9bb2d47066c3c460b25d2ffeb211",
"target": {
"file": "src/tool_msgs.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2018-16842-ea38dff0",
"digest": {
"length": 701,
"function_hash": "276247327338978490978930240644272334443"
},
"source": "https://github.com/curl/curl/commit/d530e92f59ae9bb2d47066c3c460b25d2ffeb211",
"target": {
"file": "src/tool_msgs.c",
"function": "voutf"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:05:42Z"
}
}
],
"modified": "2026-10-24T14:05:42.368816504Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2019:2181",
"https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html",
"https://security.gentoo.org/glsa/201903-03",
"https://usn.ubuntu.com/3805-1/",
"https://usn.ubuntu.com/3805-2/",
"https://www.debian.org/security/2018/dsa-4331",
"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16842",
"https://curl.haxx.se/docs/CVE-2018-16842.html",
"https://github.com/curl/curl/commit/d530e92f59ae9bb2d47066c3c460b25d2ffeb211"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "12.04"
},
{
"last_affected": "12.04"
},
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "18.10"
},
{
"last_affected": "18.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-16842",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443001,
"published_at": "2018-10-31T19:29:00.69+00:00"
}