The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8931-1 advisory.

    

    discovered that Apache HTTP Server exposed WebDAV property information. A remote attacker could possibly     use this issue to obtain sensitive information. (CVE-2026-58415)

    Zhen Kong and Charles Vosburgh discovered that Apache HTTP Server did not properly validate FTP server     responses. A remote attacker could possibly use this issue to make a forward proxy connect to an arbitrary     host. (CVE-2026-63045)

    Hyojae Lee and Zhen Kong discovered that Apache HTTP Server incorrectly handled certain HTTP requests. A     remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-63292)

    Lucian Nitescu and Zhen Kong discovered that Apache HTTP Server did not properly handle certain responses     from backend servers. A remote attacker could possibly use this issue to cause a denial of service.
    (CVE-2026-63686)

    Qing Xu discovered that Apache HTTP Server incorrectly interpreted HTTP responses from backend servers. A     remote attacker could possibly use this issue to perform HTTP response smuggling attacks. This issue only     affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-63718)

    Hyojae Lee discovered that Apache HTTP Server did not properly validate Digest authentication requests. A     machine-in-the-middle attacker could possibly use this issue to bypass authentication. (CVE-2026-73636)

    Zhen Kong and Darren Carreras discovered that Apache HTTP Server did not properly manage authentication     requests. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-73637)

    Vlatko Kosturjak discovered that Apache HTTP Server did not properly enforce access restrictions for user     directories. A remote attacker could possibly use this issue to obtain sensitive information.
    (CVE-2026-79768)

    Zhen Kong discovered that Apache HTTP Server did not properly handle certain WebDAV requests. An     authenticated user could possibly use this issue to cause a denial of service or corrupt WebDAV property     data. (CVE-2026-93546)

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

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

The version of httpd installed on the remote host is prior to 2.4.69-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3990 advisory.

    Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal     redirects from CGI programs to also be treated as CGI and executed. The target must already be in a     directory enabled for CGI and have no other extension understood by mod_mime.



    This issue affects Apache HTTP Server: from 2.4.60 through 2.4.68. (CVE-2026-42356)

    A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission     to create WebDAV locks to crash server child processes.

    Users are recommended to upgrade to version 2.4.69, which fixes this issue (CVE-2026-42528)

    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-2026-46729)

    Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache HTTP Server's     mod_session_cookie module.



    When SessionCookieRemove changes across internal redirects, the session cookie may still be passed to a     backend server.





    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-47360)

    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-2026-48005)

    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-2026-56153)

    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-2026-56154)

    Out-of-bounds Write vulnerability in Apache HTTP Server's mod_proxy_html with crafted HTTP response     bodies.



    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-56449)

    Use After Free vulnerability in Apache HTTP Server's mod_http2 via shared session->bbtmp re-entrancy



    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-57941)

    Internal state files accessible to external parties in mod_dav_fs in Apache Software Foundation Apache     HTTP Server before 2.4.69 on all platforms allows a remote client to read WebDAV dead properties of     resources it cannot author via a GET request for the .DAV state directory



    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-58415)

    Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-     related expressions.



    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-59797)

    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-2026-63045)

    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-2026-63292)

    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-2026-63686)

    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-2026-63718)

    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-2026-73636)

    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-2026-73637)

    Path equivalence: '/./' (single dot directory) vulnerability in Apache HTTP Server's mod_userdir module     when configured with absolute non-wildcard UserDir directive (the 2nd form in     https://httpd.apache.org/docs/2.4/mod/mod_userdir.html#userdir)



    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-79768)

    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. (CVE-2026-93546)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the ed670f20-bdc3-11f1-a6ea-8447094a420f advisory.

    The Apache httpd project reports:

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

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

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1791889844 advisory.

  - A memory calculation bug in mod_dav in Apache httpd 2.4.67 and earlier allows an attacker with permission     to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version     2.4.69, which fixes this issue (CVE-2026-42528)

  - 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-2026-48005)

  - Internal state files accessible to external parties in mod_dav_fs in Apache Software Foundation Apache     HTTP Server before 2.4.69 on all platforms allows a remote client to read WebDAV dead properties of     resources it cannot author via a GET request for the .DAV state directory This issue affects Apache HTTP     Server: from 2.4.0 through 2.4.68. (CVE-2026-58415)

  - Improper Privilege Management vulnerability in Apache HTTP Server's mod_ssl via SSLRequire and file-     related expressions. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. (CVE-2026-59797)

  - 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-2026-63045)

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

ID	名稱	產品	系列	已發布	已更新	嚴重性
367204	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : Apache HTTP Server vulnerabilities (USN-8931-1)	Nessus	Ubuntu Local Security Checks	2026/10/19	2026/11/2	high
365282	Amazon Linux 2 : httpd (ALAS-2026-3990)	Nessus	Amazon Linux Local Security Checks	2026/10/12	2026/10/19	critical
362474	FreeBSD : Apache httpd -- Multiple vulnerabilities (ed670f20-bdc3-11f1-a6ea-8447094a420f)	Nessus	FreeBSD Local Security Checks	2026/10/1	2026/10/9	critical
368028	AlmaLinux 9.6 [TuxCare] Security Update: httpd / httpd-core / httpd-devel / httpd-filesystem / httpd-manual / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1791889844)	Nessus	Alma Linux Local Security Checks	2026/10/20	2026/11/2	critical

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