{"vulnerability": "CVE-2023-46251", "sightings": [{"uuid": "b25e25af-103e-4a49-9d91-6f23d17a1d66", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-46251", "type": "published-proof-of-concept", "source": "Telegram/nvHcaD1k09ioCsXkfpvyYRjz9w6NVZp19bu9X1G4nCv6Eg", "content": "", "creation_timestamp": "2023-11-07T03:38:07.000000Z"}, {"uuid": "185c48a0-1975-4fa3-a146-26cbc6720ff5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-46251", "type": "published-proof-of-concept", "source": "Telegram/vrYhd9EGO9YMgYE7p-1wX1LQ0PsHTFM-ZHccSrg8msBuxQ", "content": "", "creation_timestamp": "2023-11-06T20:28:49.000000Z"}, {"uuid": "801371dc-c13e-4318-9781-8df0bf8338f0", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-46251", "type": "published-proof-of-concept", "source": "https://t.me/cibsecurity/73623", "content": "\u203c CVE-2023-46251 \u203c\n\nMyBB is a free and open source forum software. Custom MyCode (BBCode) for the visual editor (_SCEditor_) doesn't escape input properly when rendering HTML, resulting in a DOM-based XSS vulnerability. This weakness can be exploited by pointing a victim to a page where the visual editor is active (e.g. as a post or Private Message) and operates on a maliciously crafted MyCode message. This may occur on pages where message content is pre-filled using a GET/POST parameter, or on reply pages where a previously saved malicious message is quoted. The impact is be mitigated when: 1. the visual editor is disabled globally (_Admin CP ? Configuration ? Settings ? Clickable Smilies and BB Code: [Clickable MyCode Editor](https://github.com/mybb/mybb/blob/mybb_1836/install/resources/settings.xml#L2087-L2094)_ is set to _Off_), or 2. the visual editor is disabled for individual user accounts (_User CP ? Your Profile ? Edit Options_: _Show the MyCode formatting options on the posting pages_ checkbox is not checked). MyBB 1.8.37 resolves this issue with the commit `6dcaf0b4d`. Users are advised to upgrade. Users unable to upgrade may mitigate the impact without upgrading MyBB by changing the following setting (_Admin CP ? Configuration ? Settings_):- _Clickable Smilies and BB Code ? [Clickable MyCode Editor](https://github.com/mybb/mybb/blob/mybb_1836/install/resources/settings.xml#L2087-L2094)_: _Off_. Similarly, individual MyBB forum users are able to disable the visual editor by diabling the account option (_User CP ? Your Profile ? Edit Options_) _Show the MyCode formatting options on the posting pages_.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2023-11-06T20:25:59.000000Z"}, {"uuid": "24aec9d6-d157-4a88-998a-f272290cb700", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-46251", "type": "published-proof-of-concept", "source": "https://t.me/proxy_bar/1814", "content": "CVE-2023-46251 - Stored DOM XSS\nMyBB < 1.8.37\nusage:\n[size='1337px;\\\">>\\<img/src=ccc/ onerror=alert`1`//id=name //&pt;']eviltext[/size]\n\nUPD: impact", "creation_timestamp": "2023-11-06T20:09:30.000000Z"}, {"uuid": "624ee616-7a89-4677-b5ae-e0e7c8522f3c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2023-46251", "type": "published-proof-of-concept", "source": "https://t.me/crackcodes/4605", "content": "https://system32.ink/mybb-cve-2023-46251-stored-dom-xss/", "creation_timestamp": "2023-11-10T11:11:22.000000Z"}]}