CVE-2026-40487

CVE-2026-40487 - Postiz サーバーはContent-Typeヘッダーのみを検証（CWE-345） - ファイルは元の.svg拡張子でディスクに保存される（CWE-434） - nginxがimage/svg+xmlとして配信 - ブラウザが埋め込まれたJavaScriptを実行（CWE-79） - 同一オリジン: 被害者のセッションへの完全なアクセス 影響 XSSペイロードはアプリケーションと同一オリジン...

CVE-2026-2942

ProSolution WP Client — 인증되지 않은 파일 업로드 및 RCE 스캐너 플러그인: prosolution-wp-client 영향받는 버전: 취약점 유형: 인증되지 않은 임의 파일 업로드 → 원격 코드 실행 위험 수준: 🔴 심각 CVSS 9.8 요구 사항: prosolfrontend 숏코드가 포함된 공개 페이지 📌 취약점 정보 ProSolution WP Client 플러그인의 proSolfileUploadProcess AJAX action은 업로드된 파일의 MIME 타입을 검사하지만 확장자를 검증하지 않습니다...

CVE-2018-11736

CVE-2018-11736 PHP RCE エクスプロイト Pluck CMS 免責事項 ⚠️: このエクスプロイトは、主にプログラミング入門学習の演習として Rust で開発されました。技術的な厳密さの欠如や慣用的でないコードパターンについてはご容赦ください。また、これは私自身の発見ではなく、公式報告に基づいて作成したものです。 CVE-2018-11736 の PoC エクスプロイトです。Pluck CMS バージョン 4.7.7-dev2 未満に影響します。脆弱性は /data/inc/images.php にあり、攻撃者が任意のファイルをアップロードできます。悪意のある...

GHSA-JHPH-5Q74-PMFX Snipe-IT vulnerable to stored XSS via inline-served attachment

Impact A low-privilege user can store an active-content payload as an asset attachment and have it served inline, same-origin, with an active Content-Type, achieving stored XSS. The application sanitizes uploads only when PHP finfo detects image/svg+xml. By submitting an XHTML document whose finf...

CVE-2026-38526

CVE-2026-38526 - Krayin CRM PHP Upload RCE Automatisierter Exploit für Krayin CRM ≤ 2.2.x. Dieses Skript nutzt eine Schwachstelle für uneingeschränkten Dateiupload im TinyMCE-Endpunkt /admin/tinymce/upload aus, umgeht die MIME-Typ-Validierung durch Vortäuschung von image/jpeg, lädt eine...

PT-2026-78652

Name of the Vulnerable Software and Affected Versions Wekan versions prior to 9.90 Description An issue exists where the isFileValid function in models/fileValidation.js relies on the Unix file command for content-based MIME detection. When the file binary is unavailable, the detectMimeFromFile...

Exploit for CVE-2026-2942

CVE-2026-2942 ProSolution WP Client — Unauthenticated File U...

CVE-2026-40487 Postiz Has Unrestricted File Upload via MIME Type Spoofing that Leads to Stored XSS

Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the Content-Type header. The uploaded files are then served by nginx with a...

CVE-2026-33193

Docmost is open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting XSS attack due to improper handling of MIME type spoofing GHSL-2026-052. An attacker could exploit this flaw to inject malicious scripts, potentially...

CVE-2026-33193

Docmost is open-source collaborative wiki and documentation software. Versions prior to 0.70.0 are vulnerable to a stored cross-site scripting XSS attack due to improper handling of MIME type spoofing GHSL-2026-052. An attacker could exploit this flaw to inject malicious scripts, potentially...

CVE-2026-33193

Docmost is an open-source collaborative wiki; versions prior to 0.70.0 are affected by a stored XSS due to improper MIME-type handling (GHSL-2026-052). The vulnerability allows an attacker to inject scripts, potentially compromising user data. A patch is available in version 0.70.0. The CVSS vect...

CVE-2026-32931

CVE-2026-32931: Chamilo LMS has an unrestricted file upload vulnerability in the exercise sound upload function. Before versions 1.11.38 and 2.0.0-RC.3, an authenticated teacher could spoof Content-Type to audio/mpeg, upload a PHP webshell with its original .php extension into a web-accessible di...

CVE-2026-33221 Nhost Storage Affected by MIME Type Spoofing via Trusted Client Content-Type Header in Storage Upload

Nhost is an open source Firebase alternative with GraphQL. Prior to version 0.12.0, the storage service's file upload handler trusts the client-provided Content-Type header without performing server-side MIME type detection. This allows an attacker to upload files with an arbitrary MIME type,...

CVE-2026-33221 Nhost Storage Affected by MIME Type Spoofing via Trusted Client Content-Type Header in Storage Upload

Nhost is an open source Firebase alternative with GraphQL. Prior to version 0.12.0, the storage service's file upload handler trusts the client-provided Content-Type header without performing server-side MIME type detection. This allows an attacker to upload files with an arbitrary MIME type,...

CVE-2026-30821 Flowise: Arbitrary File Upload via MIME Spoofing

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, the /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELISTURLS, allowing unauthenticated access to the file upload API. While the server validates uploads based on th...

CVE-2026-30821 Flowise: Arbitrary File Upload via MIME Spoofing

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, the /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELISTURLS, allowing unauthenticated access to the file upload API. While the server validates uploads based on th...

CVE-2026-30821

Flowise prior to 3.0.13 is vulnerable to Arbitrary File Upload via MIME spoofing on the /api/v1/attachments/:chatflowId/:chatId endpoint. The server trusts the client-provided Content-Type (file.mimetype) and does not verify file content or extension, so an attacker can upload malicious files by ...

CVE-2026-30821 Flowise: Arbitrary File Upload via MIME Spoofing

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, the /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELISTURLS, allowing unauthenticated access to the file upload API. While the server validates uploads based on th...

Flowise has Arbitrary File Upload via MIME Spoofing

Vulnerability Description --- Vulnerability Overview - The /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELISTURLS, allowing unauthenticated access to the file upload API. - While the server validates uploads based on the MIME types defined in...

GHSA-J8G8-J7FC-43V6 Flowise has Arbitrary File Upload via MIME Spoofing

Vulnerability Description --- Vulnerability Overview - The /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELISTURLS, allowing unauthenticated access to the file upload API. - While the server validates uploads based on the MIME types defined in...