Mistune Heading ID Attribute has Injection XSS

Summary HTMLRenderer.heading builds the opening tag by string-concatenating the id attribute value directly into the HTML — with no call to escape, safeentity, or any other sanitisation function. A double-quote character " in the id value terminates the attribute, allowing an attacker to inject...

Unity Linux 20.1070e Security Update: gstreamer1-plugins-good (UTSA-2026-017385)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017385 advisory. Integer overflow in matroskademux element in gstmatroskademuxaddwvpkheader function which allows a heap overwrite while parsing matroska files. Potential for arbitra...

Unity Linux 20.1070e Security Update: gstreamer1-plugins-good (UTSA-2026-017386)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017386 advisory. DOS / potential heap overwrite in qtdemux using zlib decompression. Integer overflow in qtdemux element in qtdemuxinflate function which causes a segfault, or could...

Unity Linux 20.1070e Security Update: gstreamer1-plugins-good (UTSA-2026-017384)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017384 advisory. DOS / potential heap overwrite in mkv demuxing using HEADERSTRIP decompression. Integer overflow in matroskaparse element in gstmatroskadecompressdata function which...

Unity Linux 20.1070e Security Update: expat (UTSA-2026-017383)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017383 advisory. In Expat aka libexpat before 2.4.5, an attacker can trigger stack exhaustion in buildmodel via a large nesting depth in the DTD element. Tenable has extracted the...

GHSA-25RP-H46X-2HJM SiYuan: Electron Renderer RCE via decodeURIComponent-driven tooltip XSS in aria-label sink (incomplete fix for CVE-2026-34585)

Summary The tooltip mouseover handler in app/src/block/popover.ts reads aria-label via getAttribute and passes it through decodeURIComponent before assigning to messageElement.innerHTML in app/src/dialog/tooltip.ts:41. The encoder used at the producer side, escapeAriaLabel in...

SiYuan: Electron Renderer RCE via decodeURIComponent-driven tooltip XSS in aria-label sink (incomplete fix for CVE-2026-34585)

Summary The tooltip mouseover handler in app/src/block/popover.ts reads aria-label via getAttribute and passes it through decodeURIComponent before assigning to messageElement.innerHTML in app/src/dialog/tooltip.ts:41. The encoder used at the producer side, escapeAriaLabel in...

GHSA-GF5M-WCRH-7928 open-webui Vulnerable to Stored XSS via Model Description

!IMPORTANT Relationship to CVE-2024-7990 CVE-2024-7990 issued by huntr.dev, March 2025 describes a stored XSS in the same field — the model description — but exploits a different bypass mechanism: a second-order injection through the sanitizeResponseContent function's video-tag placeholder...

open-webui Vulnerable to Stored XSS via Model Description

!IMPORTANT Relationship to CVE-2024-7990 CVE-2024-7990 issued by huntr.dev, March 2025 describes a stored XSS in the same field — the model description — but exploits a different bypass mechanism: a second-order injection through the sanitizeResponseContent function's video-tag placeholder...

GHSA-RQV2-M695-F8J4 MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`

Summary The public catalogue UI served at GET / file internal/api/handlers/v0/uiindex.html is vulnerable to stored cross-site scripting via the server.websiteUrl field of any published server.json. Server-side validation in internal/validators/validators.go validateWebsiteURL only checks that the...

MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`

Summary The public catalogue UI served at GET / file internal/api/handlers/v0/uiindex.html is vulnerable to stored cross-site scripting via the server.websiteUrl field of any published server.json. Server-side validation in internal/validators/validators.go validateWebsiteURL only checks that the...

SiYuan Affected by Stored XSS via Attribute View Name to Electron Renderer RCE

Summary The kernel stores Attribute View AV / database names without any HTML escape, then a render template uses raw strings.ReplaceAlltpl, "$avName", nodeAvName to embed the name in HTML before pushing to all clients via WebSocket. Three independent client paths render.ts:120 → outerHTML,...

GHSA-2H64-C999-C9R6 SiYuan Affected by Stored XSS via Attribute View Name to Electron Renderer RCE

Summary The kernel stores Attribute View AV / database names without any HTML escape, then a render template uses raw strings.ReplaceAlltpl, "$avName", nodeAvName to embed the name in HTML before pushing to all clients via WebSocket. Three independent client paths render.ts:120 → outerHTML,...

XML External Entity (XXE) Injection

Overview Affected versions of this package are vulnerable to XML External Entity XXE Injection while processing XML entities. An attacker can inject arbitrary attributes into generated XML or HTML by crafting attribute values containing quotes, which are improperly parsed and split into multiple...

EUVD-2026-28759

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftsetpipapo: fix stack out-of-bounds read in pipapodrop pipapodrop passes rulemapi + 1.n to pipapounmap as the tooffset argument on every iteration, including the last one where i == m-fieldcount - 1. This reads one...

CVE-2026-43453

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftsetpipapo: fix stack out-of-bounds read in pipapodrop pipapodrop passes rulemapi + 1.n to pipapounmap as the tooffset argument on every iteration, including the last one where i == m-fieldcount - 1. This reads one...

DEBIAN-CVE-2026-43453

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftsetpipapo: fix stack out-of-bounds read in pipapodrop pipapodrop passes rulemapi + 1.n to pipapounmap as the tooffset argument on every iteration, including the last one where i == m-fieldcount - 1. This reads one...

CVE-2026-43453

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftsetpipapo: fix stack out-of-bounds read in pipapodrop pipapodrop passes rulemapi + 1.n to pipapounmap as the tooffset argument on every iteration, including the last one where i == m-fieldcount - 1. This reads one...

UBUNTU-CVE-2026-43453

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftsetpipapo: fix stack out-of-bounds read in pipapodrop pipapodrop passes rulemapi + 1.n to pipapounmap as the tooffset argument on every iteration, including the last one where i == m-fieldcount - 1. This reads one...

JLSEC-2026-492

A security vulnerability has been detected in libssh2 up to 1.11.1. The impacted element is the function userauthpassword of the file src/userauth.c. Such manipulation of the argument usernamelen/passwordlen leads to integer overflow. The attack may be launched remotely. The name of the patch is...