nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers

A flaw was found in NGINX. When NGINX is configured to proxy HTTP/2 traffic using the ngxhttpproxyv2module or ngxhttpgrpcmodule with specific settings, a remote, unauthenticated attacker can send specially crafted large headers. This can trigger a heap-based buffer overflow, leading to a restart ...

Important: Red Hat Security Advisory: nginx security, bug fix, and enhancement update

An update for nginx is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

Important: Red Hat Security Advisory: nginx security, bug fix, and enhancement update

An update for nginx is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers

A flaw was found in NGINX. When NGINX is configured to proxy HTTP/2 traffic using the ngxhttpproxyv2module or ngxhttpgrpcmodule with specific settings, a remote, unauthenticated attacker can send specially crafted large headers. This can trigger a heap-based buffer overflow, leading to a restart ...

Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox

ImpactKiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introducedchanges which were meant to serve all uploaded files as plain text in order to prevent browsers from executing potentially dangerous files when such files are accessed...

kiwitcms vulnerable to stored cross-site scripting via unrestricted file upload

ImpactKiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded and Content-Security-Policy definition to prevent cross-site-scripting attacks. The...

PYSEC-2026-1500 kiwitcms vulnerable to stored XSS via unrestricted files upload

Impact Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded, see GHSA-fwcf-753v-fgcj and Content-Security-Policy definition to prevent...

PYSEC-2026-835 No protection against brute-force attacks on login page

Impact Previous versions of Kiwi TCMS do not impose rate limits which makes it easier to attempt brute-force attacks against the login page. Patches Users should upgrade to v12.0 or later. Workarounds Users may install and configure a rate-limiting proxy in front of Kiwi TCMS. For example nginx...

ALSA-2026:36331 Important: nginx security, bug fix, and enhancement update

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fixes: nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes...

ALSA-2026:36364 Important: nginx security, bug fix, and enhancement update

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fixes: nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes...

Important: nginx security, bug fix, and enhancement update

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fixes: nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers CVE-2026-42055 Bug Fixes...

RHEL 10 : nginx (RHSA-2026:36364)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:36364 advisory. nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security...

RHEL 9 : nginx (RHSA-2026:36331)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:36331 advisory. nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security...

Important: nginx

Issue Overview: NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion to 2 or grpcpass directives are used to proxy HTTP/2 traffic, the ignoreinvalidheaders directive is set to off, and...

OESA-2026-2799 nginx security update

NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Security Fixes: NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion ...

OESA-2026-2798 nginx security update

NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. Security Fixes: NGINX Plus and NGINX Open Source have a vulnerability in the ngxhttpproxyv2module and ngxhttpgrpcmodule modules. This vulnerability exists when the proxyhttpversion ...

MiracleLinux 8 : nginx:1.24 (AXSA:2026-1164:01)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1164:01 advisory. nginx: ngxhttprewritemodule: code execution and denial of service CVE-2026-9256 Tenable has extracted the preceding description block directly from the...

Exploit for Missing Authentication for Critical Function in Nginxui Nginx_Ui

🚀 CVE-2026-27944: Nginx UI Unauthenticated Backup Exploit 📌 D...

Exploit for CVE-2026-42533

nginx capture-clobber scanner A read-only static scanner that...

[SECURITY] [DLA 4667-1] nginx security update

Debian LTS Advisory DLA-4667-1 [email protected] https://www.debian.org/lts/security/ Carlos Henrique Lima Melara July 03, 2026 https://wiki.debian.org/LTS Package : nginx Version : 1.22.1-9+deb12u9 CVE ID : CVE-2026-42055 CVE-2026-48142 Debian Bug : 1140359 1140361 Multiple...