Vulnerability · Published Oct 11, 2026 · Assigned by WPScan

CVE-2026-87764BuddyPress Instant Chat <= 1.6 - Unauthenticated Stored XSS via Chat Message

High 8.8

In plain English

A high-severity cross-site scripting in BuddyPress Instant Chat from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.3%top 79.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	BuddyPress Instant Chat	0 – through 1.6

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/4c8836ae-5a1f-48ca-96fd-50a85e014cf6/ exploit, vdb-entry, technical-description