ubuntu-cve-2026-42945
Vulnerability from osv_ubuntu
Published
2026-05-14 00:00
Modified
2026-06-29 11:32
Summary
Details
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
8.1 (High)
8.1 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "nginx",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-common",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-core",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-full",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-light",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-naxsi",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
},
{
"binary_name": "nginx-naxsi-ui",
"binary_version": "1.4.6-1ubuntu3.9+esm6"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.4.6-1ubuntu3.9+esm6?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.6-1ubuntu3.9+esm6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.1-3ubuntu1",
"1.4.3-2ubuntu1",
"1.4.4-1ubuntu1",
"1.4.4-2ubuntu1",
"1.4.4-4ubuntu1",
"1.4.5-1ubuntu1",
"1.4.6-1ubuntu2",
"1.4.6-1ubuntu3",
"1.4.6-1ubuntu3.1",
"1.4.6-1ubuntu3.2",
"1.4.6-1ubuntu3.3",
"1.4.6-1ubuntu3.4",
"1.4.6-1ubuntu3.5",
"1.4.6-1ubuntu3.6",
"1.4.6-1ubuntu3.7",
"1.4.6-1ubuntu3.8",
"1.4.6-1ubuntu3.9",
"1.4.6-1ubuntu3.9+esm1",
"1.4.6-1ubuntu3.9+esm2",
"1.4.6-1ubuntu3.9+esm3",
"1.4.6-1ubuntu3.9+esm4",
"1.4.6-1ubuntu3.9+esm5"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "nginx",
"binary_version": "1.10.3-0ubuntu0.16.04.5+esm7"
},
{
"binary_name": "nginx-common",
"binary_version": "1.10.3-0ubuntu0.16.04.5+esm7"
},
{
"binary_name": "nginx-core",
"binary_version": "1.10.3-0ubuntu0.16.04.5+esm7"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.10.3-0ubuntu0.16.04.5+esm7"
},
{
"binary_name": "nginx-full",
"binary_version": "1.10.3-0ubuntu0.16.04.5+esm7"
},
{
"binary_name": "nginx-light",
"binary_version": "1.10.3-0ubuntu0.16.04.5+esm7"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.10.3-0ubuntu0.16.04.5+esm7?arch=source\u0026distro=esm-infra-legacy/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.3-0ubuntu0.16.04.5+esm7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.9.3-1ubuntu1",
"1.9.6-2ubuntu1",
"1.9.6-2ubuntu2",
"1.9.9-0ubuntu1",
"1.9.9-1ubuntu1",
"1.9.10-0ubuntu1",
"1.9.10-1ubuntu1",
"1.9.11-0ubuntu1",
"1.9.11-0ubuntu2",
"1.9.12-0ubuntu1",
"1.9.13-0ubuntu1",
"1.9.14-0ubuntu1",
"1.9.15-0ubuntu1",
"1.10.0-0ubuntu0.16.04.1",
"1.10.0-0ubuntu0.16.04.2",
"1.10.0-0ubuntu0.16.04.3",
"1.10.0-0ubuntu0.16.04.4",
"1.10.3-0ubuntu0.16.04.1",
"1.10.3-0ubuntu0.16.04.2",
"1.10.3-0ubuntu0.16.04.3",
"1.10.3-0ubuntu0.16.04.4",
"1.10.3-0ubuntu0.16.04.5",
"1.10.3-0ubuntu0.16.04.5+esm1",
"1.10.3-0ubuntu0.16.04.5+esm2",
"1.10.3-0ubuntu0.16.04.5+esm3",
"1.10.3-0ubuntu0.16.04.5+esm4",
"1.10.3-0ubuntu0.16.04.5+esm5",
"1.10.3-0ubuntu0.16.04.5+esm6"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libnginx-mod-http-auth-pam",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-cache-purge",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-dav-ext",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-echo",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-fancyindex",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-headers-more-filter",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-lua",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-ndk",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-subs-filter",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-uploadprogress",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-upstream-fair",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-nchan",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-rtmp",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "nginx",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "nginx-common",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "nginx-core",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "nginx-full",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
},
{
"binary_name": "nginx-light",
"binary_version": "1.14.0-0ubuntu1.11+esm2"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.14.0-0ubuntu1.11+esm2?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.14.0-0ubuntu1.11+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.12.1-0ubuntu2",
"1.13.6-2ubuntu1",
"1.13.6-2ubuntu2",
"1.13.10-1ubuntu1",
"1.13.12-0ubuntu1",
"1.14.0-0ubuntu1",
"1.14.0-0ubuntu1.1",
"1.14.0-0ubuntu1.2",
"1.14.0-0ubuntu1.3",
"1.14.0-0ubuntu1.4",
"1.14.0-0ubuntu1.5",
"1.14.0-0ubuntu1.6",
"1.14.0-0ubuntu1.7",
"1.14.0-0ubuntu1.9",
"1.14.0-0ubuntu1.10",
"1.14.0-0ubuntu1.11",
"1.14.0-0ubuntu1.11+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libnginx-mod-http-auth-pam",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-cache-purge",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-dav-ext",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-echo",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-fancyindex",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-geoip2",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-headers-more-filter",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-lua",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-ndk",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-subs-filter",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-uploadprogress",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-upstream-fair",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-nchan",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-rtmp",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "nginx",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "nginx-common",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "nginx-core",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "nginx-full",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
},
{
"binary_name": "nginx-light",
"binary_version": "1.18.0-0ubuntu1.7+esm1"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.18.0-0ubuntu1.7+esm1?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.0-0ubuntu1.7+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.16.1-0ubuntu2",
"1.16.1-0ubuntu3",
"1.17.5-0ubuntu1",
"1.17.6-0ubuntu1",
"1.17.7-0ubuntu1",
"1.17.8-0ubuntu1",
"1.17.8-0ubuntu2",
"1.17.8-0ubuntu3",
"1.17.9-0ubuntu1",
"1.17.9-0ubuntu2",
"1.17.9-0ubuntu3",
"1.17.10-0ubuntu1",
"1.18.0-0ubuntu1",
"1.18.0-0ubuntu1.2",
"1.18.0-0ubuntu1.3",
"1.18.0-0ubuntu1.4",
"1.18.0-0ubuntu1.5",
"1.18.0-0ubuntu1.6",
"1.18.0-0ubuntu1.7"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnginx-mod-http-auth-pam",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-cache-purge",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-dav-ext",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-echo",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-fancyindex",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-geoip2",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-headers-more-filter",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-ndk",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-subs-filter",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-uploadprogress",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-upstream-fair",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-nchan",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-rtmp",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-stream-geoip",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "libnginx-mod-stream-geoip2",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "nginx",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "nginx-common",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "nginx-core",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "nginx-full",
"binary_version": "1.18.0-6ubuntu14.11"
},
{
"binary_name": "nginx-light",
"binary_version": "1.18.0-6ubuntu14.11"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.18.0-6ubuntu14.11?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.18.0-6ubuntu14.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.18.0-6ubuntu11",
"1.18.0-6ubuntu12",
"1.18.0-6ubuntu14",
"1.18.0-6ubuntu14.1",
"1.18.0-6ubuntu14.2",
"1.18.0-6ubuntu14.3",
"1.18.0-6ubuntu14.4",
"1.18.0-6ubuntu14.5",
"1.18.0-6ubuntu14.6",
"1.18.0-6ubuntu14.7",
"1.18.0-6ubuntu14.8",
"1.18.0-6ubuntu14.10"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "libnginx-mod-stream-geoip",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "nginx",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "nginx-common",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "nginx-core",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "nginx-full",
"binary_version": "1.24.0-2ubuntu7.8"
},
{
"binary_name": "nginx-light",
"binary_version": "1.24.0-2ubuntu7.8"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.24.0-2ubuntu7.8?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.24.0-2ubuntu7.8"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.24.0-1ubuntu1",
"1.24.0-2ubuntu1",
"1.24.0-2ubuntu2",
"1.24.0-2ubuntu3",
"1.24.0-2ubuntu4",
"1.24.0-2ubuntu6",
"1.24.0-2ubuntu7",
"1.24.0-2ubuntu7.1",
"1.24.0-2ubuntu7.3",
"1.24.0-2ubuntu7.4",
"1.24.0-2ubuntu7.5",
"1.24.0-2ubuntu7.6",
"1.24.0-2ubuntu7.7"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "libnginx-mod-stream-geoip",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "nginx",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "nginx-common",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "nginx-core",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "nginx-full",
"binary_version": "1.28.0-6ubuntu1.3"
},
{
"binary_name": "nginx-light",
"binary_version": "1.28.0-6ubuntu1.3"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.28.0-6ubuntu1.3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.28.0-6ubuntu1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.26.3-2ubuntu1",
"1.26.3-3ubuntu1",
"1.26.3-3ubuntu2",
"1.26.3-3ubuntu3",
"1.28.0-3ubuntu1",
"1.28.0-4ubuntu1",
"1.28.0-6ubuntu1",
"1.28.0-6ubuntu1.1",
"1.28.0-6ubuntu1.2"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "libnginx-mod-stream-geoip",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "nginx",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "nginx-common",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "nginx-core",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "nginx-full",
"binary_version": "1.28.3-2ubuntu1.1"
},
{
"binary_name": "nginx-light",
"binary_version": "1.28.3-2ubuntu1.1"
}
],
"priority_reason": "Possible remote code execution issue"
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.28.3-2ubuntu1.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.28.3-2ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.28.0-6ubuntu1",
"1.28.1-2ubuntu1",
"1.28.1-3ubuntu1",
"1.28.2-2ubuntu1",
"1.28.3-2ubuntu1"
]
}
],
"aliases": [],
"details": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module\u00a0module. This vulnerability exists when the rewrite\u00a0directive is followed by a rewrite, if, or set\u00a0directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "UBUNTU-CVE-2026-42945",
"modified": "2026-06-29T11:32:12Z",
"published": "2026-05-14T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-42945"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-42945"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2026/05/13/7"
},
{
"type": "REPORT",
"url": "https://depthfirst.com/research/nginx-rift-achieving-nginx-rce-via-an-18-year-old-vulnerability"
},
{
"type": "REPORT",
"url": "https://my.f5.com/manage/s/article/K000161019"
},
{
"type": "REPORT",
"url": "https://nginx.org/en/security_advisories.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8271-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8375-1"
}
],
"related": [
"USN-8271-1",
"USN-8375-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "high",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-42945"
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…