dynoxide: DNS rebinding and cross-origin CSRF via MCP HTTP transport

Summary dynoxide's MCP HTTP transport was vulnerable to DNS rebinding via its transitive rmcp dependency, plus a related cross-origin CSRF gap. A malicious web page could make the user's browser send requests to a local dynoxide mcp --http or dynoxide serve --mcp server with a non-loopback Host...

async-http-client: Cookie header not stripped on cross-origin redirect

Summary async-http-client leaks Cookie headers to cross-origin redirect targets. When following a redirect across a security boundary different origin, or HTTPS→HTTP downgrade, the propagatedHeaders method in Redirect30xInterceptor.java strips Authorization and Proxy-Authorization headers but doe...

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 ...

GHSA-5RV5-XJ5J-3484 Faraday has a possible incomplete fix for GHSA-33mh-2634-fwr2: protocol-relative URI objects still bypass host scoping

Summary Faraday::Connectionbuildexclusiveurl still allows protocol-relative host override when the request target is provided as a URI object instead of a String. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and can redirect a request built from a fixed-base Faraday::Connection to ...

Faraday has a possible incomplete fix for GHSA-33mh-2634-fwr2: protocol-relative URI objects still bypass host scoping

Summary Faraday::Connectionbuildexclusiveurl still allows protocol-relative host override when the request target is provided as a URI object instead of a String. This bypasses the February 2026 fix for GHSA-33mh-2634-fwr2 and can redirect a request built from a fixed-base Faraday::Connection to ...

JLSEC-2026-509

In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::alternatives in prelexer.hpp...

JLSEC-2026-501

In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::SelectorList::populateextends in SharedPtr.hpp used by ast.cpp and astselectors.cpp may cause a Denial of Service application crash via a crafted sass input file...

JLSEC-2026-508

In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::parenthesescope in prelexer.hpp...

RUSTSEC-2026-0145 PAX Header Desynchronization in astral-tokio-tar

Versions of astral-tokio-tar prior to 0.6.2 contain a PAX header interpretation bug that allows manipulated entries to be made selectively visible or invisible during extraction with astral-tokio-tar versus other tar implementations. An attacker could use this differential to smuggle unexpected...

PAX Header Desynchronization in astral-tokio-tar

Versions of astral-tokio-tar prior to 0.6.2 contain a PAX header interpretation bug that allows manipulated entries to be made selectively visible or invisible during extraction with astral-tokio-tar versus other tar implementations. An attacker could use this differential to smuggle unexpected...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the Host header when constructing response URLs for custom slash commands. An attacker can redirect responses to a server under their control by sending a specially crafted request with a spoofed Hos...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the burn-on-read reveal endpoint due to missing validation of the X-Requested-With header. An attacker can force the unauthorized reveal of a burn-on-read message without recipient consent by sending a crafte...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of netty-handler-proxy

Summary Due to use of netty-handler-proxy, DevOps Test Performance and Rational Performance Tester contain a potential header injection vulnerability. Vulnerability Details CVEID:CVE-2026-42578 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Fina...

CLSA-2026-1779097389 qemu-kvm: Fix of CVE-2023-6693

fix CVE-2023-6693: virtio-net stack overflow via large guesthdrlen...

GHSA-VQP5-2MRP-QQXG Mattermost doesn't validate the Host header when constructing response URLs for custom slash command

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost...

Mattermost doesn't validate the X-Requested-With header on the burn-on-read reveal endpoint

Mattermost versions 11.5.x = 11.5.1, 11.4.x = 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost...

GHSA-XVCX-MGPC-5XH3 Mattermost doesn't validate the X-Requested-With header on the burn-on-read reveal endpoint

Mattermost versions 11.5.x = 11.5.1, 11.4.x = 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost...

Mattermost doesn't validate the Host header when constructing response URLs for custom slash command

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost...

CVE-2026-6333

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost...

CVE-2026-6339

Mattermost versions 11.5.x = 11.5.1, 11.4.x = 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost...