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

Quick assessment

Affected
Unknown BuddyPress Instant Chat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BuddyPress Instant Chat WordPress 插件 1.6 及更早版本存在两个安全缺陷：首先，该插件在添加聊天消息时，未验证消息发送者是否属于当前对话；其次，插件在将消息内容输出回前端时，未对其进行转义处理。这些缺陷使得未认证的攻击者能够注入任意的 Web 脚本，导致任何后续查看该对话的成员在其会话中执行这些恶意脚本。

AI Predicted 6.1 Difficulty: Easy EPSS 0.28% · P18

Possible ATT&CK Techniques 1 AI

T1133 · External Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown BuddyPress Instant Chat ≤ 1.6 affected
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I. Basic Information for CVE-2026-87764

Vulnerability Information
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Vulnerability Title
BuddyPress Instant Chat <= 1.6 - Unauthenticated Stored XSS via Chat Message
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown BuddyPress Instant Chat 0 ~ 1.6 -

II. Public POCs for CVE-2026-87764

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III. Intelligence Information for CVE-2026-87764

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Same Patch Batch · Unknown · 2026-10-11 · 63 CVEs total

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CVE-2026-104681 Envira Gallery < 1.16.2 - Author+ Non-Public Post Title and Excerpt Disclosure via Gallery
CVE-2026-104682 Envira Gallery < 1.16.2 - Contributor Missing Authorization via Convert Gallery REST Route
CVE-2026-104028 Anton Extensions <= 1.2.2 - Unauthenticated Arbitrary File Upload to RCE
CVE-2026-81649 Fundiin <= 3.4.0 - Unauthenticated Payment Gateway Settings Update and Credential Disclosu
CVE-2026-81155 Robo Gallery < 5.2.6 - Author+ Stored XSS via Gallery Search Label
CVE-2026-81154 Robo Gallery < 5.2.6 - Author+ Stored XSS via Image Alt Text
CVE-2026-81420 Tcard WP <= 1.8.0 - Unauthenticated SQLi via group_id Parameter
CVE-2026-81156 Robo Gallery < 5.2.6 - Contributor+ Stored XSS via Gallery Settings
CVE-2026-14854 WooCommerce Bookings < 3.11.0 - Unauthenticated Denial of Service
CVE-2026-84252 click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Arbitrary Options Update
CVE-2026-84260 click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Stored XSS via post_notifica
CVE-2026-84259 click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Stored XSS via post_notifications
CVE-2026-84253 click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Arbitrary Options Update
CVE-2026-84261 click5 CRM add-on to Contact Form 7 <= 1.0.4 - Unauthenticated Stored XSS via post_notific
CVE-2026-84254 click5 CRM add-on to Contact Form 7 <= 1.0.4 - Unauthenticated Arbitrary Options Update
CVE-2026-84258 click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Stored XSS via post_notificati
CVE-2026-84737 Freeton WP <= 1.0.0 - Unauthenticated Account Takeover via 'secod' Parameter
CVE-2026-84734 Mindstien Quick Login <= 1.0 - Unauthenticated Administrator Account Takeover via 'mql_pas

Showing top 20 of 63 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Unknown

V. Comments for CVE-2026-87764

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