CVE-2026-23768

lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension...

Lucy-XSS security vulnerability

Lucy-XSS is an open-source cross-site scripting protection library developed by NAVER. Lucy-XSS has a security vulnerability that occurs when the ObjectSecurityListener or EmbedSecurityListener option is enabled, and the src attribute lacks a file extension. This vulnerability may lead to a HEAD...

CVE-2026-22864 Deno has an incomplete fix for command-injection prevention on Windows — case-insensitive extension bypass

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.5.6, a prior patch aimed to block spawning Windows batch/shell files by returning an error when a spawned path’s extension matched .bat or .cmd. That check performs a case-sensitive comparison against lowercase literals and...

CVE-2005-1576

The file download dialog in Mozilla Firefox 0.10.1 and 1.0 for Windows uses the Content-Type HTTP header to determine the file type, but saves the original file extension when "Save to Disk" is selected, which allows remote attackers to hide the real file types of downloaded files...

CVE-2009-4444

Microsoft Internet Information Services IIS 5.x and 6.x uses only the portion of a filename before a ; semicolon character to determine the file extension, which allows remote attackers to bypass intended extension restrictions of third-party upload applications via a filename with a 1 .asp, 2...

CVE-2022-0687

The Amelia WordPress plugin before 1.0.47 stores image blobs into actual files whose extension is controlled by the user, which may lead to PHP backdoors being uploaded onto the site. This vulnerability can be exploited by logged-in users with the custom "Amelia Manager" role...

CVE-2019-11401

A issue was discovered in SiteServer CMS 6.9.0. It allows remote attackers to execute arbitrary code because an administrator can add the permitted file extension .aassp, which is converted to .asp because the "as" substring is deleted...

CVE-2020-10212

upload.php in Responsive FileManager 9.13.4 and 9.14.0 allows SSRF via the url parameter because file-extension blocking is mishandled and because it is possible for a DNS hostname to resolve to an internal IP address. For example, an SSRF attempt may succeed if a .ico filename is added to the...

CVE-2019-7838

ColdFusion versions Update 3 and earlier, Update 10 and earlier, and Update 18 and earlier have a file extension blacklist bypass vulnerability. Successful exploitation could lead to arbitrary code execution...

CVE-2024-2565

A vulnerability was found in PandaXGO PandaX up to 20240310. It has been classified as critical. Affected is an unknown function of the file /apps/system/router/upload.go of the component File Extension Handler. The manipulation of the argument file leads to unrestricted upload. It is possible to...

CVE-2023-53980 ProjectSend r1605 Remote Code Execution via File Extension Manipulation

ProjectSend r1605 contains a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions. Attackers can upload shell scripts with disguised extensions through the upload.process.php endpoint to execute arbitrary commands on the server...

CVE-2023-53980

ProjectSend r1605 is affected by a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions via the upload.process.php endpoint, enabling execution of arbitrary commands on the server. The issue, described across multiple sources, stems f...

CVE-2023-53980 ProjectSend r1605 Remote Code Execution via File Extension Manipulation

ProjectSend r1605 contains a remote code execution vulnerability that allows attackers to upload malicious files by manipulating file extensions. Attackers can upload shell scripts with disguised extensions through the upload.process.php endpoint to execute arbitrary commands on the server...

CVE-2023-53924

UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar extension during profile avatar upload. Attackers can trigger code execution by visiting the uploaded file's location, enabling system command execution...

CVE-2025-68109

ChurchCRM is an open-source church management system. In versions prior to 6.5.3, the Database Restore functionality does not validate the content or file extension of uploaded files. As a result, an attacker can upload a web shell file and subsequently upload a .htaccess file to enable direct...

CVE-2024-58280

CMSimple 5.15 contains a remote command execution vulnerability that allows authenticated attackers to modify file extensions and upload malicious PHP files. Attackers can append ',php' to Extensionsuserfiles and upload a shell script to the media directory to execute arbitrary code on the server...

PT-2025-50529

Name of the Vulnerable Software and Affected Versions CMSimple version 5.15 Description An authenticated attacker can execute commands remotely on the server. This is possible by modifying file extensions and uploading malicious PHP files. Specifically, attackers can append ',php' to Extensions...

CVE-2025-66548

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a different extension th...

CVE-2025-66548

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a different extension th...

CVE-2025-66548 Nextcloud Deck app allows to spoof file extensions by using RTLO characters

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a different extension th...