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ALSA-2022:1915 — Moderate: httpd:2.4 security and bug fix update

2026-10-04T04:59:36.666948+00:00

Affected: AlmaLinux:8: httpd, AlmaLinux:8: httpd-devel, AlmaLinux:8: httpd-filesystem, AlmaLinux:8: httpd-manual, AlmaLinux:8: httpd-tools, AlmaLinux:8: mod_http2, AlmaLinux:8: mod_ldap, AlmaLinux:8: mod_md, AlmaLinux:8: mod_proxy_html, AlmaLinux:8: mod_session and 1 more

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

* httpd: Request splitting via HTTP/2 method injection and mod_proxy (CVE-2021-33193)

* httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path (CVE-2021-36160)

* httpd: possible NULL dereference or SSRF in forward proxy configurations (CVE-2021-44224)

* httpd: Single zero byte stack overflow in mod_auth_digest (CVE-2020-35452)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

bdu:2021-06099

2026-10-04T04:59:36.667041+00:00

bdu:2021-06099

Withdrawn: BELL-CVE-2021-36160 — CVE-2021-36160 does not affect BellSoft software

2026-10-04T04:59:36.667059+00:00

Withdrawn by the publisher.

BIT-apache-2021-36160 — mod_proxy_uwsgi out of bound read

2026-10-04T04:59:36.667075+00:00

Affected: Bitnami: apache

A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).

certfr-2021-avi-713 — De multiples vulnérabilités ont été découvertes dans Apache httpd. Elles permettent à un attaquant de provoquer un prob…

2026-10-04T04:59:36.667095+00:00

certfr-2021-avi-713

cnvd-2022-03205

2026-10-04T04:59:36.667109+00:00

cnvd-2022-03205

EUVD-2026-29307

2026-10-04T04:59:36.667120+00:00

EUVD-2026-29307

fkie_cve-2021-36160

2026-10-04T04:59:36.667130+00:00

A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).

GHSA-f4wr-wvqf-r2q5

2026-10-04T04:59:36.667150+00:00

A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).

gsd-2021-36160

2026-10-04T04:59:36.667164+00:00

gsd-2021-36160

msrc_CVE-2021-36160 — mod_proxy_uwsgi out of bound read

2026-10-04T04:59:36.667174+00:00

msrc_CVE-2021-36160

OESA-2021-1369 — httpd security update

2026-10-04T04:59:36.667188+00:00

Affected: openEuler:20.03-LTS-SP1: httpd, openEuler:20.03-LTS-SP2: httpd

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Security Fix(es): A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).(CVE-2021-36160) Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.(CVE-2021-34798) A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.(CVE-2021-40438)

openSUSE-SU-2021:1438-1 — Security update for apache2

2026-10-04T04:59:36.667212+00:00

Security update for apache2

RHSA-2022:6753 — Red Hat Security Advisory: httpd24-httpd security and bug fix update

2026-10-04T04:59:36.667228+00:00

httpd: Request splitting via HTTP/2 method injection and mod_proxy httpd: NULL pointer dereference via malformed requests httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path httpd: Out-of-bounds write in ap_escape_quotes() via malicious input httpd: possible NULL dereference or SSRF in forward proxy configurations httpd: mod_lua: Use of uninitialized value of in r:parsebody httpd: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody httpd: mod_sed: Read/write beyond bounds httpd: mod_proxy_ajp: Possible request smuggling httpd: Out-of-bounds read via ap_rwrite() httpd: Out-of-bounds read in ap_strcmp_match() httpd: mod_lua: DoS in r:parsebody httpd: mod_sed: DoS vulnerability httpd: mod_lua: Information disclosure with websockets httpd: mod_proxy: X-Forwarded-For dropped by hop-by-hop mechanism

SUSE-SU-2021:3335-1 — Security update for apache2

2026-10-04T04:59:36.667299+00:00

Security update for apache2

UBUNTU-CVE-2021-36160

2026-10-04T04:59:36.667316+00:00

Affected: Ubuntu:20.04:LTS: apache2

A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).

WID-SEC-W-2022-0724 — Apache HTTP Server: Mehrere Schwachstellen

2026-10-04T04:59:36.667333+00:00

Ein entfernter Angreifer kann mehrere Schwachstellen in Apache HTTP Server ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen und einen Denial of Service Zustand herzustellen.