
CVE-2024-51750 – Element allows a malicious homeserver can modify events leading to unrenderable events or rooms
https://notcve.org/view.php?id=CVE-2024-51750
12 Nov 2024 — Element is a Matrix web client built using the Matrix React SDK. A malicious homeserver can send invalid messages over federation which can prevent Element Web and Desktop from rendering single messages or the entire room containing them. This was patched in Element Web and Desktop 1.11.85. • https://github.com/element-hq/element-web/commit/231073c578d5f92b33cde7aa2b0b9c5836b2dc48 • CWE-248: Uncaught Exception •

CVE-2024-51749 – Element's thumbnails can be abused to misrepresent the content of an attachment
https://notcve.org/view.php?id=CVE-2024-51749
12 Nov 2024 — Element is a Matrix web client built using the Matrix React SDK. Versions of Element Web and Desktop earlier than 1.11.85 do not check if thumbnails for attachments, stickers and images are coherent. It is possible to add thumbnails to events trigger a file download once clicked. Fixed in element-web 1.11.85. • https://github.com/element-hq/element-web/commit/a00c343435d633e64de2c0548217aa611c7bbef5 • CWE-451: User Interface (UI) Misrepresentation of Critical Information •

CVE-2024-47779 – Element Web vulnerable to potential exposure of access token via authenticated media
https://notcve.org/view.php?id=CVE-2024-47779
15 Oct 2024 — Element is a Matrix web client built using the Matrix React SDK. Element Web versions 1.11.70 through 1.11.80 contain a vulnerability which can, under specially crafted conditions, lead to the access token becoming exposed to third parties. At least one vector has been identified internally, involving malicious widgets, but other vectors may exist. Note that despite superficial similarity to CVE-2024-47771, this is an entirely separate vulnerability, caused by a separate piece of code included only in Eleme... • https://github.com/element-hq/element-web/security/advisories/GHSA-3jm3-x98c-r34x • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •