GHSA-6HR6-W5QG-QMWG h2: Duplicate Host header could facilitate request smuggling

Impact h2 =4.4.0 accepts request header blocks containing more than one Host header, and forwards every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request carries two Host header lines, which is a request smuggling primitive CWE-444...

CVE-2026-71555 PILOS: Reverse tabnabbing in room description

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. From 2.1.0 until 4.14.1, PILOS does not send a Cross-Origin-Opener-Policy response header, so pages opened by PILOS via a link that opens a new browsing context e.g., target="blank" retain a window.opener referen...

EUVD-2026-54178

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. From 2.1.0 until 4.14.1, PILOS does not send a Cross-Origin-Opener-Policy response header, so pages opened by PILOS via a link that opens a new browsing context e.g., target="blank" retain a window.opener referen...

CVE-2026-71555

PILSOS (the PILOS frontend for BigBlueButton) is affected from version 2.1.0 through 4.14.1 by missing Cross-Origin-Opener-Policy headers, allowing reverse tabnabbing via links that open new browsing contexts (target="_blank"). A malicious destination page could access window.opener to navigate o...

CVE-2026-71555

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. From 2.1.0 until 4.14.1, PILOS does not send a Cross-Origin-Opener-Policy response header, so pages opened by PILOS via a link that opens a new browsing context e.g., target="blank" retain a window.opener referen...

CVE-2026-71555 PILOS: Reverse tabnabbing in room description

PILOS Platform for Interactive Live-Online Seminars is a frontend for BigBlueButton. From 2.1.0 until 4.14.1, PILOS does not send a Cross-Origin-Opener-Policy response header, so pages opened by PILOS via a link that opens a new browsing context e.g., target="blank" retain a window.opener referen...

EUVD-2026-54177

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request...

CVE-2026-71554

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request...

CVE-2026-71554

CVE-2026-71554 affects the Python HTTP/2 stack in the h2 package. Versions up to and including 4.4.0 accept header blocks containing more than one Host header and forward all Host headers to the application. When a client downgrades HTTP/2 to HTTP/1.1, this can yield two Host header lines, enabli...

CVE-2026-71554 h2: Duplicate Host header could facilitate request smuggling

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request...

GHSA-XXPX-F366-4XPQ Craft CMS:Authorization bypass: view-only Categories user can modify category structure via structures/move-element

A control-panel user who holds only the viewCategories permission for a category group and not saveCategories can permanently modify that group's category structure — reordering and re-parenting categories via the structures/move-element action. A read-time authorization grant that a write endpoi...

Craft CMS: Missing authorization check allows non-admin control panel users access to user registration metrics

ChartsController::actionGetNewUsersData at /actions/charts/get-new-users-data is missing a requirePermission'viewUsers' authorization check. Any authenticated control panel user, regardless of permissions beyond accessCp, can POST to this endpoint to receive time-series user registration counts f...

GHSA-RVMM-V933-JGXQ Craft CMS: Missing authorization check allows non-admin control panel users access to user registration metrics

ChartsController::actionGetNewUsersData at /actions/charts/get-new-users-data is missing a requirePermission'viewUsers' authorization check. Any authenticated control panel user, regardless of permissions beyond accessCp, can POST to this endpoint to receive time-series user registration counts f...

CVE-2026-48054

OpenZeppelin Contracts Wizard prior to version 0.10.9 is affected by a code injection vulnerability in generated Hardhat/Foundry tests. The root cause is interpolation of user-supplied opts.name and opts.uri directly into TypeScript test files (zip-hardhat.ts:48 and :50) without escaping, enablin...

EUVD-2026-54176

OpenZeppelin Contracts Wizardis a web application to interactively build a contract out of components from OpenZeppelin Contracts. Versions prior to 0.10.9 generate a Hardhat test file test/test.ts by interpolating user-supplied opts.name ERC20/ERC721 and opts.uri ERC1155 directly into TypeScript...

CVE-2026-48054 OpenZeppelin Contracts Wizard has Code Injection in Generated Hardhat and Foundry Tests via Unsanitized opts.name / opts.uri

OpenZeppelin Contracts Wizardis a web application to interactively build a contract out of components from OpenZeppelin Contracts. Versions prior to 0.10.9 generate a Hardhat test file test/test.ts by interpolating user-supplied opts.name ERC20/ERC721 and opts.uri ERC1155 directly into TypeScript...

CVE-2026-49391

Frappe is a full-stack web application framework. Prior to 16.19.0 and 15.109.0, Data Import does not escape imported column headers before rendering previews and results, allowing an authenticated importer to persist script content that executes when another user views the import interface. This...

EUVD-2026-54175

Frappe is a full-stack web application framework. Prior to 16.19.0 and 15.109.0, Data Import does not escape imported column headers before rendering previews and results, allowing an authenticated importer to persist script content that executes when another user views the import interface. This...

CVE-2026-49391 Frappe: Stored XSS in Column Headers via Data Import

Frappe is a full-stack web application framework. Prior to 16.19.0 and 15.109.0, Data Import does not escape imported column headers before rendering previews and results, allowing an authenticated importer to persist script content that executes when another user views the import interface. This...

CVE-2026-49391 Frappe: Stored XSS in Column Headers via Data Import

Frappe is a full-stack web application framework. Prior to 16.19.0 and 15.109.0, Data Import does not escape imported column headers before rendering previews and results, allowing an authenticated importer to persist script content that executes when another user views the import interface. This...