CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload

Mattermost versions 11.6.x = 11.6.5, 10.11.x = 10.11.20, 11.8.x = 11.8.1, 11.7.x = 11.7.4 fail to limit the number of frames and enforce the file size cap on animated GIF uploads, which allows an authenticated attacker to cause a denial of service via a crafted animated GIF uploaded as a custom...

CVE-2021-47746

NodeBB Plugin Emoji 3.2.1 contains an arbitrary file write vulnerability that allows administrative users to write files to arbitrary system locations through the emoji upload API. Attackers with admin access can craft file upload requests with directory traversal to overwrite system files by...

Emoji for NodeBB security vulnerability

Emoji for NodeBB is an emoji plugin developed by NodeBB. Version 3.2.1 of Emoji for NodeBB contains a security vulnerability. This vulnerability stems from the possibility of arbitrary file writing through the emoji upload API, which could lead to overwriting system files...