| Title | SeaCMS 13.6 Cross Site Scripting |
|---|
| Description | SeaCMS 13.6 `err.php` reflects the user-controlled `errtxt` query parameter inside a `<textarea>` without proper HTML escaping. An unauthenticated attacker can inject `</textarea>` to break out of the element and append arbitrary HTML or JavaScript, resulting in reflected cross-site scripting when a victim opens the crafted URL. |
|---|
| Source | ⚠️ https://github.com/T-Chachamaru/seacms-13.6-security-advisories/blob/a084a3e573240d54860153321df271280daec262/c-007-errtxt-reflected-xss.md |
|---|
| User | T-Chachamaru (UID 99844) |
|---|
| Submission | 07/16/2026 09:23 (2 months ago) |
|---|
| Moderation | 08/30/2026 08:42 (1 month later) |
|---|
| Status | Accepted |
|---|
| VulDB entry | 397103 [SeaCMS up to 13.6 /err.php errtxt cross site scripting] |
|---|
| Points | 19 |
|---|