libsoup from versions 2.65.1 until 2.68.1 have a heap-based buffer over-read because soupntlmparse_challenge() in soup-auth-ntlm.c does not properly check an NTLM message's length before proceeding with a memcpy.
{
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "19.04"
},
{
"last_affected": "19.04"
}
],
"vendor_product": "canonical:ubuntu_linux",
"source": "CPE_STRING"
}
]
}{
"cpe": "cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "2.65.1"
},
{
"fixed": "2.66.4"
},
{
"introduced": "2.67.1"
},
{
"last_affected": "2.68.1"
}
],
"source": "CPE_RANGE"
}{
"cpe": "cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "2.65.1"
},
{
"fixed": "2.66.4"
},
{
"introduced": "2.67.1"
},
{
"last_affected": "2.68.1"
}
],
"source": [
"CPE_RANGE",
"REFERENCES"
]
}[
{
"source": "https://gitlab.gnome.org/gnome/libsoup@88b7dff4467f4151afae244ea7d1223753cd05ab",
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"14331469025586231543591114824372293487",
"105098998331837764232321155729018717892",
"266396959809182485889246480568975055349",
"225325912854221928613598010904794245346"
],
"threshold": 0.9
},
"deprecated": false,
"id": "CVE-2019-17266-5fb3d2ee",
"target": {
"file": "libsoup/soup-auth-ntlm.c"
}
},
{
"source": "https://gitlab.gnome.org/gnome/libsoup@f8a54ac85eec2008c85393f331cdd251af8266ad",
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"14331469025586231543591114824372293487",
"105098998331837764232321155729018717892",
"266396959809182485889246480568975055349",
"225325912854221928613598010904794245346"
],
"threshold": 0.9
},
"deprecated": false,
"id": "CVE-2019-17266-7aac81ba",
"target": {
"file": "libsoup/soup-auth-ntlm.c"
}
},
{
"source": "https://gitlab.gnome.org/gnome/libsoup@88b7dff4467f4151afae244ea7d1223753cd05ab",
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "22872420392307703907202346827715479280",
"length": 1524.0
},
"deprecated": false,
"id": "CVE-2019-17266-88394bd3",
"target": {
"function": "soup_ntlm_parse_challenge",
"file": "libsoup/soup-auth-ntlm.c"
}
},
{
"source": "https://gitlab.gnome.org/gnome/libsoup@f8a54ac85eec2008c85393f331cdd251af8266ad",
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "22872420392307703907202346827715479280",
"length": 1524.0
},
"deprecated": false,
"id": "CVE-2019-17266-9543589d",
"target": {
"function": "soup_ntlm_parse_challenge",
"file": "libsoup/soup-auth-ntlm.c"
}
}
]
"2026-07-08T20:15:42Z"
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-17266.json"