httpd: Fix of 5 CVEs
- CVE-2026-28780: mod_proxy_ajp 4-byte heap buffer overflow when contacting a malicious AJP backend (off-by-AJP_HEADER_LEN check in ajp_msg_check_header) - CVE-2026-34059: mod_proxy_ajp heap over-read in ajp_parse_data on short AJP replies - CVE-2026-33006: mod_auth_digest used non-constant-time strcmp() for nonce-hash and response-digest comparisons; replace with constant-time comparison and validate nonce/digest sizes - CVE-2026-33857: mod_proxy_ajp off-by-one out-of-bounds reads in ajp_msg_get_uint8/uint16/uint32 and ajp_msg_peek_uint8/uint16 length checks - CVE-2026-34032: mod_proxy_ajp ajp_msg_get_string: tighten length check to msg->len and verify the NUL terminator is present
- Products
- httpd, httpd-devel, httpd-manual, httpd-tools, mod_ssl
- Affected versions
- Not specified
- Fixed versions
- 1:2.2.15-72.el6.tuxcare.els12, 2.2.15-72.el6.tuxcare.els12
- CVEs
- CVE-2026-28780, CVE-2026-33006, CVE-2026-33857, CVE-2026-34032, CVE-2026-34059
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:55 UTC · Revision 1
Source evidence
- CVE-2026-28780: mod_proxy_ajp 4-byte heap buffer overflow when contacting a malicious AJP backend (off-by-AJP_HEADER_LEN check in ajp_msg_check_header) - CVE-2026-34059: mod_proxy_ajp heap over-read in ajp_parse_data on short AJP replies - CVE-2026-33006: mod_auth_digest used non-constant-time strcmp() for nonce-hash and response-digest comparisons; replace with constant-time comparison and validate nonce/digest sizes - CVE-2026-33857: mod_proxy_ajp off-by-one out-of-bounds reads in ajp_msg_get_uint8/uint16/uint32 and ajp_msg_peek_uint8/uint16 length checks - CVE-2026-34032: mod_proxy_ajp ajp_msg_get_string: tighten length check to msg->len and verify the NUL terminator is present
osv:CLSA-2026-1779297093
httpd
Fixed versions: 2.2.15-72.el6.tuxcare.els12
httpd-devel
Fixed versions: 2.2.15-72.el6.tuxcare.els12
httpd-manual
Fixed versions: 2.2.15-72.el6.tuxcare.els12
httpd-tools
Fixed versions: 2.2.15-72.el6.tuxcare.els12
mod_ssl
Fixed versions: 1:2.2.15-72.el6.tuxcare.els12
Complete source record
{
"id": "ec29043fdc652d1d26b98e9cec811913daebfb0fe4cdf5a62220b03fe22e4b76",
"url": "https://osv.dev/vulnerability/CLSA-2026-1779297093",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "httpd: Fix of 5 CVEs",
"summary": "- CVE-2026-28780: mod_proxy_ajp 4-byte heap buffer overflow when contacting a malicious AJP backend (off-by-AJP_HEADER_LEN check in ajp_msg_check_header) - CVE-2026-34059: mod_proxy_ajp heap over-read in ajp_parse_data on short AJP replies - CVE-2026-33006: mod_auth_digest used non-constant-time strcmp() for nonce-hash and response-digest comparisons; replace with constant-time comparison and validate nonce/digest sizes - CVE-2026-33857: mod_proxy_ajp off-by-one out-of-bounds reads in ajp_msg_get_uint8/uint16/uint32 and ajp_msg_peek_uint8/uint16 length checks - CVE-2026-34032: mod_proxy_ajp ajp_msg_get_string: tighten length check to msg->len and verify the NUL terminator is present",
"evidence": "osv:CLSA-2026-1779297093",
"products": [
{
"name": {
"value": "httpd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.15-72.el6.tuxcare.els12",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-devel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.15-72.el6.tuxcare.els12",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-manual",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.15-72.el6.tuxcare.els12",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "httpd-tools",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.15-72.el6.tuxcare.els12",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mod_ssl",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:2.2.15-72.el6.tuxcare.els12",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1779297093",
"aliases": [
"CLSA-2026-1779297093"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.15-72.el6.tuxcare.els12"
}
]
}
],
"package": {
"name": "httpd",
"purl": "pkg:rpm/tuxcare/httpd?distro=centos-6",
"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1779297093.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.15-72.el6.tuxcare.els12"
}
]
}
],
"package": {
"name": "httpd-devel",
"purl": "pkg:rpm/tuxcare/httpd-devel?distro=centos-6",
"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1779297093.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.15-72.el6.tuxcare.els12"
}
]
}
],
"package": {
"name": "httpd-manual",
"purl": "pkg:rpm/tuxcare/httpd-manual?distro=centos-6",
"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1779297093.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.15-72.el6.tuxcare.els12"
}
]
}
],
"package": {
"name": "httpd-tools",
"purl": "pkg:rpm/tuxcare/httpd-tools?distro=centos-6",
"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1779297093.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:2.2.15-72.el6.tuxcare.els12"
}
]
}
],
"package": {
"name": "mod_ssl",
"purl": "pkg:rpm/tuxcare/mod_ssl?distro=centos-6",
"ecosystem": "TuxCare:CentOS:6"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos6els/CLSA-2026-1779297093.json"
}
}
],
"modified": "2026-10-26T09:43:44.464845560Z",
"provider": "osv",
"upstream": [
"CVE-2026-28780",
"CVE-2026-33006",
"CVE-2026-33857",
"CVE-2026-34032",
"CVE-2026-34059"
],
"references": [
"https://errata.tuxcare.com/els_os/centos6els/CLSA-2026-1779297093.html"
]
},
"related_cves": [
{
"value": "CVE-2026-28780",
"evidence": "/upstream"
},
{
"value": "CVE-2026-33006",
"evidence": "/upstream"
},
{
"value": "CVE-2026-33857",
"evidence": "/upstream"
},
{
"value": "CVE-2026-34032",
"evidence": "/upstream"
},
{
"value": "CVE-2026-34059",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 450109,
"published_at": "2026-05-21T15:37:45+00:00"
}