httpd: Fix of 11 CVEs
- CVE-2026-63718: mod_proxy_uwsgi: drop hop-by-hop headers from the backend response - CVE-2026-73636: mod_auth_digest: accept a one-time nonce only once, also when the client entry was garbage collected - CVE-2026-73637: mod_auth_digest: don't use a client entry outside the client lock - CVE-2026-48005: mod_auth_digest: track the nonce-count per nonce and record it only for a fully verified request - mod_auth_digest: configs using "AuthDigestQop none" or the "authdigest-opaque" Mutex type no longer start ("AuthDigestQop none" in .htaccess: 500; the shipped manual still documents it); RFC 2069 clients (no qop) are refused; with AuthDigestNcCheck On or AuthDigestNonceLifetime 0, 503 if no client entry fits in shared memory; log ids AH01767, AH01771, AH01772, AH01792 and AH01793 are removed - mod_auth_digest: with AuthDigestNcCheck On, a request that is authenticated twice (e.g. a DirectoryIndex file in its own section) is refused with 401 - mod_auth_digest: after a reload (also the logrotate one) or a SIGHUP restart a captured request can be accepted once more under AuthDigestNonceLifetime 0 or AuthDigestNcCheck; only stopping httpd (systemctl restart) invalidates it (fixed upstream only in trunk f4c4160fbf, not in 2.4.69) - CVE-2026-63686: mod_xml2enc: avoid a NULL pointer dereference when a charset conversion fails part way - CVE-2026-63045: mod_proxy_ftp: reject a PASV reply whose address differs from the control connection peer - CVE-2026-42528: mod_dav: limit the number o
- Products
- httpd, httpd-core, httpd-devel, httpd-filesystem, httpd-manual, httpd-tools, mod_ldap, mod_lua, mod_proxy_html, mod_session, mod_ssl
- Affected versions
- Not specified
- Fixed versions
- 1:2.4.62-4.el9_6.4.tuxcare.els15, 2.4.62-4.el9_6.4.tuxcare.els15
- CVEs
- CVE-2026-42528, CVE-2026-48005, CVE-2026-58415, CVE-2026-59797, CVE-2026-63045, CVE-2026-63686, CVE-2026-63718, CVE-2026-73636, CVE-2026-73637, CVE-2026-79768, CVE-2026-93546
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:56 UTC · Revision 1
Source evidence
- CVE-2026-63718: mod_proxy_uwsgi: drop hop-by-hop headers from the backend response - CVE-2026-73636: mod_auth_digest: accept a one-time nonce only once, also when the client entry was garbage collected - CVE-2026-73637: mod_auth_digest: don't use a client entry outside the client lock - CVE-2026-48005: mod_auth_digest: track the nonce-count per nonce and record it only for a fully verified request - mod_auth_digest: configs using "AuthDigestQop none" or the "authdigest-opaque" Mutex type no longer start ("AuthDigestQop none" in .htaccess: 500; the shipped manual still documents it); RFC 2069 clients (no qop) are refused; with AuthDigestNcCheck On or AuthDigestNonceLifetime 0, 503 if no client entry fits in shared memory; log ids AH01767, AH01771, AH01772, AH01792 and AH01793 are removed - mod_auth_digest: with AuthDigestNcCheck On, a request that is authenticated twice (e.g. a DirectoryIndex file in its own section) is refused with 401 - mod_auth_digest: after a reload (also the logrotate one) or a SIGHUP restart a captured request can be accepted once more under AuthDigestNonceLifetime 0 or AuthDigestNcCheck; only stopping httpd (systemctl restart) invalidates it (fixed upstream only in trunk f4c4160fbf, not in 2.4.69) - CVE-2026-63686: mod_xml2enc: avoid a NULL pointer dereference when a charset conversion fails part way - CVE-2026-63045: mod_proxy_ftp: reject a PASV reply whose address differs from the control connection peer - CVE-2026-42528: mod_dav: limit the number o
osv:CLSA-2026-1791889844
httpd
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
httpd-core
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
httpd-devel
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
httpd-filesystem
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
httpd-manual
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
httpd-tools
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
mod_ldap
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
mod_lua
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
mod_proxy_html
Fixed versions: 1:2.4.62-4.el9_6.4.tuxcare.els15
mod_session
Fixed versions: 2.4.62-4.el9_6.4.tuxcare.els15
mod_ssl
Fixed versions: 1:2.4.62-4.el9_6.4.tuxcare.els15
Complete source record
{
"id": "005453616abc701839c2af28993205756dded8ffaec5d95a9ff4e40220d5249c",
"url": "https://osv.dev/vulnerability/CLSA-2026-1791889844",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "httpd: Fix of 11 CVEs",
"summary": "- CVE-2026-63718: mod_proxy_uwsgi: drop hop-by-hop headers from the backend response - CVE-2026-73636: mod_auth_digest: accept a one-time nonce only once, also when the client entry was garbage collected - CVE-2026-73637: mod_auth_digest: don't use a client entry outside the client lock - CVE-2026-48005: mod_auth_digest: track the nonce-count per nonce and record it only for a fully verified request - mod_auth_digest: configs using \"AuthDigestQop none\" or the \"authdigest-opaque\" Mutex type no longer start (\"AuthDigestQop none\" in .htaccess: 500; the shipped manual still documents it); RFC 2069 clients (no qop) are refused; with AuthDigestNcCheck On or AuthDigestNonceLifetime 0, 503 if no client entry fits in shared memory; log ids AH01767, AH01771, AH01772, AH01792 and AH01793 are removed - mod_auth_digest: with AuthDigestNcCheck On, a request that is authenticated twice (e.g. a DirectoryIndex file in its own section) is refused with 401 - mod_auth_digest: after a reload (also the logrotate one) or a SIGHUP restart a captured request can be accepted once more under AuthDigestNonceLifetime 0 or AuthDigestNcCheck; only stopping httpd (systemctl restart) invalidates it (fixed upstream only in trunk f4c4160fbf, not in 2.4.69) - CVE-2026-63686: mod_xml2enc: avoid a NULL pointer dereference when a charset conversion fails part way - CVE-2026-63045: mod_proxy_ftp: reject a PASV reply whose address differs from the control connection peer - CVE-2026-42528: mod_dav: limit the number o",
"evidence": "osv:CLSA-2026-1791889844",
"products": [
{
"name": {
"value": "httpd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-core",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-devel",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-filesystem",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-manual",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-tools",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mod_ldap",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mod_lua",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mod_proxy_html",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mod_session",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mod_ssl",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.4.62-4.el9_6.4.tuxcare.els15",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1791889844",
"aliases": [
"CLSA-2026-1791889844"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "httpd",
"purl": "pkg:rpm/tuxcare/httpd?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "httpd-core",
"purl": "pkg:rpm/tuxcare/httpd-core?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "httpd-devel",
"purl": "pkg:rpm/tuxcare/httpd-devel?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "httpd-filesystem",
"purl": "pkg:rpm/tuxcare/httpd-filesystem?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "httpd-manual",
"purl": "pkg:rpm/tuxcare/httpd-manual?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "httpd-tools",
"purl": "pkg:rpm/tuxcare/httpd-tools?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "mod_ldap",
"purl": "pkg:rpm/tuxcare/mod_ldap?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
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}
]
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],
"package": {
"name": "mod_lua",
"purl": "pkg:rpm/tuxcare/mod_lua?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "mod_proxy_html",
"purl": "pkg:rpm/tuxcare/mod_proxy_html?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "mod_session",
"purl": "pkg:rpm/tuxcare/mod_session?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.4.62-4.el9_6.4.tuxcare.els15"
}
]
}
],
"package": {
"name": "mod_ssl",
"purl": "pkg:rpm/tuxcare/mod_ssl?distro=almalinux-9.6",
"ecosystem": "TuxCare:AlmaLinux:9.6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1791889844.json"
}
}
],
"modified": "2026-10-26T09:43:50.917066975Z",
"provider": "osv",
"upstream": [
"CVE-2026-42528",
"CVE-2026-48005",
"CVE-2026-58415",
"CVE-2026-59797",
"CVE-2026-63045",
"CVE-2026-63686",
"CVE-2026-63718",
"CVE-2026-73636",
"CVE-2026-73637",
"CVE-2026-79768",
"CVE-2026-93546"
],
"references": [
"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1791889844.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42528",
"https://nvd.nist.gov/vuln/detail/CVE-2026-48005",
"https://nvd.nist.gov/vuln/detail/CVE-2026-58415",
"https://nvd.nist.gov/vuln/detail/CVE-2026-59797",
"https://nvd.nist.gov/vuln/detail/CVE-2026-63045",
"https://nvd.nist.gov/vuln/detail/CVE-2026-63686",
"https://nvd.nist.gov/vuln/detail/CVE-2026-63718",
"https://nvd.nist.gov/vuln/detail/CVE-2026-73636",
"https://nvd.nist.gov/vuln/detail/CVE-2026-73637",
"https://nvd.nist.gov/vuln/detail/CVE-2026-79768",
"https://nvd.nist.gov/vuln/detail/CVE-2026-93546"
]
},
"related_cves": [
{
"value": "CVE-2026-42528",
"evidence": "/upstream"
},
{
"value": "CVE-2026-48005",
"evidence": "/upstream"
},
{
"value": "CVE-2026-58415",
"evidence": "/upstream"
},
{
"value": "CVE-2026-59797",
"evidence": "/upstream"
},
{
"value": "CVE-2026-63045",
"evidence": "/upstream"
},
{
"value": "CVE-2026-63686",
"evidence": "/upstream"
},
{
"value": "CVE-2026-63718",
"evidence": "/upstream"
},
{
"value": "CVE-2026-73636",
"evidence": "/upstream"
},
{
"value": "CVE-2026-73637",
"evidence": "/upstream"
},
{
"value": "CVE-2026-79768",
"evidence": "/upstream"
},
{
"value": "CVE-2026-93546",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 450186,
"published_at": "2026-10-13T11:11:01+00:00"
}