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High ALAS2-2026-3990 19 CVEs

Important: httpd security update (Amazon Linux 2)

Published Oct 12, 2026 · Updated Oct 16, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: 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. CVE-2026-79768: 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-2026-73637: 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-2026-73636: 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-2026-63718: 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-2026-63686: 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-2026-63292: 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-2026-63045: 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-2026-59797: 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-2026-58415: 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-2026-57941: 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-2026-56449: 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-2026-56154: 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-2026-56153: 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-2026-48005: 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-2026-47360: 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-2026-46729: 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-2026-42528: 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-2026-42356: 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.

Fixed packages 12

ReleasePackageFixed in
Amazon Linux · 2 httpd 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 httpd-debuginfo 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 httpd-devel 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 httpd-filesystem 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 httpd-manual 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 httpd-tools 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 mod_http2 1:2.4.69-1.amzn2.0.3
Amazon Linux · 2 mod_ldap 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 mod_md 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 mod_proxy_html 1:2.4.69-1.amzn2.0.3
Amazon Linux · 2 mod_session 0:2.4.69-1.amzn2.0.3
Amazon Linux · 2 mod_ssl 1:2.4.69-1.amzn2.0.3

Vulnerabilities 19

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-42356.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-42528.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-46729.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-47360.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-48005.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-56153.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-56154.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-56449.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-57941.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-58415.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-59797.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-63045.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-63292.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-63686.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-63718.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-73636.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-73637.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-79768.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-93546.html