CVE-2026-87764
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
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.
Risk Assessment
Stored XSS can lead to member session hijacking, data theft, or spreading malware among chat users.
Recommendation
Update the BuddyPress Instant Chat plugin to the latest version that includes security fixes. If not available, consider removing or disabling it until a patch is released.
Related vulnerabilities
- CVE-2026-79876Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79875Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79874Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79873Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79872Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79871Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79870Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79869Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79868Critical
No vulnerability description was provided in the supplied NVD data. Technical details and the affected component cannot be determined from the available information.
- CVE-2026-79867Critical
No vulnerability description is available in the NVD. The nature and scope of the issue cannot be determined from the provided data.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS