UnratedFix available
Fix CVE(s): CVE-2026-44631
Type: advisorySources: OSV
* SECURITY UPDATE: buffer underwrite in ap_regname() regex capture handling - debian/patches/CVE-2026-44631.patch: cast the PCRE name-table bytes to unsigned char in ap_regname() so the capture group number cannot become negative, and reject capture numbers above 1024, in server/util_pcre.c; check the return value in the , , and section handlers in server/core.c and modules/proxy/mod_proxy.c - CVE-2026-44631
- Products
- apache2, apache2-bin, apache2-data, apache2-dev, apache2-doc, apache2-ssl-dev, apache2-suexec-custom, apache2-suexec-pristine, apache2-utils, libapache2-mod-md, libapache2-mod-proxy-uwsgi
- Affected versions
- Not specified
- Fixed versions
- 2.4.59-1~deb10u1+tuxcare.els10
- CVEs
- CVE-2026-44631
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:20 UTC · Revision 1
Source evidence
* SECURITY UPDATE: buffer underwrite in ap_regname() regex capture handling - debian/patches/CVE-2026-44631.patch: cast the PCRE name-table bytes to unsigned char in ap_regname() so the capture group number cannot become negative, and reject capture numbers above 1024, in server/util_pcre.c; check the return value in the , , and section handlers in server/core.c and modules/proxy/mod_proxy.c - CVE-2026-44631
osv:CLSA-2026-1783529026
apache2
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-bin
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-data
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-dev
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-doc
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-ssl-dev
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-suexec-custom
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-suexec-pristine
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
apache2-utils
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
libapache2-mod-md
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
libapache2-mod-proxy-uwsgi
Fixed versions: 2.4.59-1~deb10u1+tuxcare.els10
Complete source record
{
"id": "6a2d754d2207ca2338a809bed9d1fdd4369968a6357b20f5ced49c0382438fd4",
"url": "https://osv.dev/vulnerability/CLSA-2026-1783529026",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-44631",
"summary": "* SECURITY UPDATE: buffer underwrite in ap_regname() regex capture handling - debian/patches/CVE-2026-44631.patch: cast the PCRE name-table bytes to unsigned char in ap_regname() so the capture group number cannot become negative, and reject capture numbers above 1024, in server/util_pcre.c; check the return value in the , , and section handlers in server/core.c and modules/proxy/mod_proxy.c - CVE-2026-44631",
"evidence": "osv:CLSA-2026-1783529026",
"products": [
{
"name": {
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"evidence": "/affected/0/package/name"
},
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{
"value": "2.4.59-1~deb10u1+tuxcare.els10",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
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{
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{
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{
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{
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{
"name": {
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{
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],
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{
"name": {
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"evidence": "/affected/7/package/name"
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{
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"evidence": "/affected/7/ranges"
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"affected_versions": []
},
{
"name": {
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"evidence": "/affected/8/package/name"
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"affected_versions": []
},
{
"name": {
"value": "libapache2-mod-md",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.59-1~deb10u1+tuxcare.els10",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libapache2-mod-proxy-uwsgi",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.59-1~deb10u1+tuxcare.els10",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1783529026",
"aliases": [
"CLSA-2026-1783529026"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
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{
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}
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],
"package": {
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"purl": "pkg:deb/tuxcare/apache2?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
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{
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}
]
}
],
"package": {
"name": "apache2-bin",
"purl": "pkg:deb/tuxcare/apache2-bin?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
{
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{
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}
]
}
],
"package": {
"name": "apache2-data",
"purl": "pkg:deb/tuxcare/apache2-data?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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{
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}
]
}
],
"package": {
"name": "apache2-dev",
"purl": "pkg:deb/tuxcare/apache2-dev?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
}
],
"package": {
"name": "apache2-doc",
"purl": "pkg:deb/tuxcare/apache2-doc?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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}
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],
"package": {
"name": "apache2-ssl-dev",
"purl": "pkg:deb/tuxcare/apache2-ssl-dev?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
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}
]
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],
"package": {
"name": "apache2-suexec-custom",
"purl": "pkg:deb/tuxcare/apache2-suexec-custom?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
{
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}
]
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],
"package": {
"name": "apache2-suexec-pristine",
"purl": "pkg:deb/tuxcare/apache2-suexec-pristine?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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],
"package": {
"name": "apache2-utils",
"purl": "pkg:deb/tuxcare/apache2-utils?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
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}
},
{
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],
"package": {
"name": "libapache2-mod-md",
"purl": "pkg:deb/tuxcare/libapache2-mod-md?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
},
{
"ranges": [
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],
"package": {
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"purl": "pkg:deb/tuxcare/libapache2-mod-proxy-uwsgi?distro=debian-10",
"ecosystem": "TuxCare:Debian:10"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1783529026.json"
}
}
],
"modified": "2026-10-26T09:31:52.317170052Z",
"provider": "osv",
"upstream": [
"CVE-2026-44631"
],
"references": [
"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1783529026.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-44631"
]
},
"related_cves": [
{
"value": "CVE-2026-44631",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448773,
"published_at": "2026-07-08T16:44:03+00:00"
}