UnratedFix available
Fix CVE(s): CVE-2026-42356
Type: advisorySources: OSV
* SECURITY UPDATE: wrong handler on internal redirect from a CGI program - debian/patches/CVE-2026-42356.patch: do not propagate the trusted content-type flag to the target of an internal redirect in ap_internal_redirect_handler() in modules/http/http_request.c. - CVE-2026-42356
- Products
- apache2, apache2-bin, apache2-data, apache2-dev, apache2-doc, apache2-suexec-custom, apache2-suexec-pristine, apache2-utils
- Affected versions
- Not specified
- Fixed versions
- 1:2.4.18-2ubuntu3.17+tuxcare.els29
- CVEs
- CVE-2026-42356
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:40 UTC · Revision 1
Source evidence
* SECURITY UPDATE: wrong handler on internal redirect from a CGI program - debian/patches/CVE-2026-42356.patch: do not propagate the trusted content-type flag to the target of an internal redirect in ap_internal_redirect_handler() in modules/http/http_request.c. - CVE-2026-42356
osv:CLSA-2026-1791886853
apache2
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-bin
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-data
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-dev
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-doc
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-suexec-custom
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-suexec-pristine
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
apache2-utils
Fixed versions: 1:2.4.18-2ubuntu3.17+tuxcare.els29
Complete source record
{
"id": "62dc8ce6aca75d9c43d5e80fd963b93e6805497546675db22e2af271247c3eb4",
"url": "https://osv.dev/vulnerability/CLSA-2026-1791886853",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-42356",
"summary": "* SECURITY UPDATE: wrong handler on internal redirect from a CGI program - debian/patches/CVE-2026-42356.patch: do not propagate the trusted content-type flag to the target of an internal redirect in ap_internal_redirect_handler() in modules/http/http_request.c. - CVE-2026-42356",
"evidence": "osv:CLSA-2026-1791886853",
"products": [
{
"name": {
"value": "apache2",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-bin",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-data",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-dev",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-doc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-suexec-custom",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-suexec-pristine",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "apache2-utils",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.18-2ubuntu3.17+tuxcare.els29",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1791886853",
"aliases": [
"CLSA-2026-1791886853"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2",
"purl": "pkg:deb/tuxcare/apache2?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-bin",
"purl": "pkg:deb/tuxcare/apache2-bin?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-data",
"purl": "pkg:deb/tuxcare/apache2-data?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-dev",
"purl": "pkg:deb/tuxcare/apache2-dev?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-doc",
"purl": "pkg:deb/tuxcare/apache2-doc?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-suexec-custom",
"purl": "pkg:deb/tuxcare/apache2-suexec-custom?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-suexec-pristine",
"purl": "pkg:deb/tuxcare/apache2-suexec-pristine?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.18-2ubuntu3.17+tuxcare.els29"
}
]
}
],
"package": {
"name": "apache2-utils",
"purl": "pkg:deb/tuxcare/apache2-utils?distro=ubuntu-16.04",
"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1791886853.json"
}
}
],
"modified": "2026-10-26T09:32:02.920183280Z",
"provider": "osv",
"upstream": [
"CVE-2026-42356"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu16.04els/CLSA-2026-1791886853.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42356"
]
},
"related_cves": [
{
"value": "CVE-2026-42356",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449489,
"published_at": "2026-10-13T10:21:04+00:00"
}