CLSA-2026-1779126256 Fix CVE(s): CVE-2026-42945

SECURITY UPDATE: fix heap buffer overrun in ngxhttprewritemodule when rewrite is followed by set/if/rewrite with unnamed PCRE captures - debian/patches/CVE-2026-42945.patch: fix heap buffer overrun in ngxhttprewritemodule when rewrite is followed by set/if/rewrite with unnamed PCRE captures -...

CLSA-2026-1779119053 Fix of 8 CVEs

SECURITY UPDATE: modproxyajp heap buffer over-read in ajpmsggetstring - debian/patches/CVE-2026-34032.patch: add buffer checks in modules/proxy/ajpmsg.c. - CVE-2026-34032 SECURITY UPDATE: AJP getter functions off-by-one out-of-bounds reads - debian/patches/CVE-2026-33857.patch: fix length checks ...

CLSA-2026-1779118679 Fix of 8 CVEs

SECURITY UPDATE: modproxyajp heap buffer over-read in ajpmsggetstring - debian/patches/CVE-2026-34032.patch: add buffer checks in modules/proxy/ajpmsg.c. - CVE-2026-34032 SECURITY UPDATE: AJP getter functions off-by-one out-of-bounds reads - debian/patches/CVE-2026-33857.patch: fix length checks ...

Exploit for CVE-2026-42945

CVE-2026-42945 Safe Checker This repository contains a defens...

nginx: NGINX: Arbitrary Code Execution Vulnerability

A flaw was found in NGINX, specifically within the ngxhttprewritemodule. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests under specific rewrite configurations. This can lead to a heap buffer overflow in the NGINX worker process, which may result in...

nginx: NGINX: Arbitrary Code Execution Vulnerability

A flaw was found in NGINX, specifically within the ngxhttprewritemodule. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests under specific rewrite configurations. This can lead to a heap buffer overflow in the NGINX worker process, which may result in...

nginx: NGINX: Arbitrary Code Execution Vulnerability

A flaw was found in NGINX, specifically within the ngxhttprewritemodule. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests under specific rewrite configurations. This can lead to a heap buffer overflow in the NGINX worker process, which may result in...

Missing Authorization

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Missing Authorization via the post rewrite endpoint. An attacker can gain unauthorized access to the content of threads in private channels and...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization via the post rewrite endpoint. An attacker can gain unauthorized access to the content of threads in private channels and direct messages by sending a crafted request. Remediation Upgrade...

GHSA-8R89-8W26-CQ32 Mattermost doesn't verify channel membership when processing AI-assisted message rewrites

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

Mattermost doesn't verify channel membership when processing AI-assisted message rewrites

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

CVE-2026-5163

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

CVE-2026-5163 Missing authorization check in AI message rewrite endpoint allows access to private thread content

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

CVE-2026-5163 Missing authorization check in AI message rewrite endpoint allows access to private thread content

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

CVE-2026-5163

Mattermost 11.5.x prior to 11.5.2 (up to 11.5.1 affected) fails to verify channel membership when processing AI-assisted message rewrites, allowing an authenticated user to read content from threads in private channels and direct messages they should not access via a crafted request to the post r...

CVE-2026-5163

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

CVE-2026-5163 Missing authorization check in AI message rewrite endpoint allows access to private thread content

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

Kwetsbaarheid verholpen in NGINX ngx_http_rewrite_module

NGINX has identified a vulnerability in the ngxhttprewritemodule, which is part of both the NGINX Plus and open-source versions of the software. The vulnerability involves a heap buffer overflow in the ngxhttprewritemodule, which is responsible for URL rewriting functionality. An attacker can...

CVE-2026-5163: Missing Authorization

Mattermost versions 11.5.x = 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite...

PT-2026-41725

Name of the Vulnerable Software and Affected Versions Summarize versions prior to 0.15.1 Description An insecure file permission issue exists in the refresh-free configuration rewrite path. When the software rewrites the configuration file, it creates the replacement using default process umask...