usn-8271-1
Vulnerability from osv_ubuntu
Published
2026-05-14 12:03
Modified
2026-06-29 10:54
Summary
nginx vulnerability
Details
It was discovered that the nginx ngx_http_rewrite_module component incorrectly handled certain rewrite directives. A remote attacker could use this issue to cause nginx to crash, resulting in a denial of service, or possibly execute arbitrary code.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-42945",
"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"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"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"
}
]
},
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-42945",
"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"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"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"
}
]
},
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-42945",
"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"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"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"
}
]
},
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-42945",
"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"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"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"
}
]
},
"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": "It was discovered that the nginx ngx_http_rewrite_module component\nincorrectly handled certain rewrite directives. A remote attacker could use\nthis issue to cause nginx to crash, resulting in a denial of service, or\npossibly execute arbitrary code.",
"id": "USN-8271-1",
"modified": "2026-06-29T10:54:19Z",
"published": "2026-05-14T12:03:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8271-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-42945"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "nginx vulnerability",
"upstream": [
"UBUNTU-CVE-2026-42945"
]
}
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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.
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