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TencentOS Server 3: httpd:2.4 (TSSA-2026:1327)

critical Nessus Plugin ID 375731

Synopsis

The remote TencentOS Server 3 host is missing one or more security updates.

Description

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:1327 advisory.

 Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

 CVE-2026-33006:
 A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.

 Users are recommended to upgrade to version 2.4.67, which fixes this issue.

 CVE-2026-46729:
 NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener.



 This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

 CVE-2026-48005:
 Missing authentication checks in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause a denial of service (forced re- authentication) via forged Authorization headers when Digest authentication is enabled with AuthDigestNcCheck .

 Users are recommended to upgrade to version 2.4.69, which fixes this issue.

 CVE-2026-56153:
 Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite.



 This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

 CVE-2026-56154:
 Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...})



 This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

 CVE-2026-63045:
 Improper validation of FTP PASV reply address in mod_proxy_ftp in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows, in forward proxy configurations, an untrusted FTP server to cause the proxy to open a data connection to an arbitrary third-party host via a crafted PASV response.

 Users are recommended to upgrade to version 2.4.69, which fixes this issue.

 CVE-2026-63292:
 Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default.

 Users are recommended to upgrade to version 2.4.69, which fixes this issue.

 CVE-2026-63686:
 A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails.

 Users are recommended to upgrade to version 2.4.69, which fixes this issue.

 CVE-2026-63718:
 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi and a crafted uwsgi response with Transfer- Encoding.



 This issue affects Apache HTTP Server: from 2.4.30 through 2.4.68.

 CVE-2026-73636:
 Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0.

 Users are recommended to upgrade to version 2.4.69, which fixes this issue.

 CVE-2026-73637:
 Use after free in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause authentication state corruption via concurrent Digest authentication requests when AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is set to 0.

 Users are recommended to upgrade to version 2.4.69, which fixes this issue.

 CVE-2026-93546:
 Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://mirrors.tencent.com/tlinux/errata/tssa-20261327.xml

Plugin Details

Severity: Critical

ID: 375731

File Name: tencentos_TSSA_2026_1327.nasl

Version: 1.1

Type: Local

Published: 11/4/2026

Updated: 11/4/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.31

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-56154

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:tencent:tencentos_server:3, p-cpe:/a:tencent:tencentos_server:httpd, p-cpe:/a:tencent:tencentos_server:mod_http2, p-cpe:/a:tencent:tencentos_server:mod_md

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/etc/os-release, Host/TencentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/29/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-33006, CVE-2026-46729, CVE-2026-48005, CVE-2026-56153, CVE-2026-56154, CVE-2026-63045, CVE-2026-63292, CVE-2026-63686, CVE-2026-63718, CVE-2026-73636, CVE-2026-73637, CVE-2026-93546