CVE-2026-87764
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductBuddyPress Instant Chat
PublishedOct 11, 2026
First seenOct 11, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| BuddyPress Instant Chat | v ≤ 1.6 | — |
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