CVE-2026-87764
BuddyPress Instant Chat <= 1.6 - Unauthenticated Stored XSS via Chat Message
- State
- Published
- Severity
- 8.8 High
- Published
- Oct 11, 2026
- Updated
- Oct 11, 2026
- Reserved
- Sep 9, 2026
Description
The BuddyPress Instant Chat WordPress plugin through 1.6 does not check that the sender of a chat message belongs to the conversation it is being added to, nor does it escape message content before outputting it back, allowing unauthenticated users to store arbitrary web scripts that will execute in the session of any member who later views that conversation.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
BuddyPress Instant ChatUnknown |
|
References
- https://wpscan.com/vulnerability/4c8836ae-5a1f-48ca-96fd-50a85e014cf6/exploitvdb-entrytechnical-description
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