CVE-2026-16773

WPBot <= 8.5.9 - Unauthenticated Sensitive Information Exposure in 'wpbot_send_email_transcript' AJAX Action

2026-07-27 23:30

Strategic Overview

Status: Patched in 8.6.0
Affected Plugin: WPBot – AI ChatBot for Live Support, Lead Generation, AI Services
Affected Version: <= 8.5.9
CVSS: 5.3Medium
Weakness type: CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE: CVE-2026-16773

View all WPBot – AI ChatBot for Live Support, Lead Generation, AI Services vulnerabilities

At a glance

CVE-2026-16773 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the WPBot WordPress plugin, affecting versions <= 8.5.9. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 8.6.0; sites on affected versions should update now. Disclosed July 2026, reported by Wordfence PRISM.

Vulnerability Overview

The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 8.5.9 via the wpbot_send_email_transcript_free. This makes it possible for unauthenticated attackers to exfiltrate full chat transcripts and associated user PII — including names, email addresses, and phone numbers — stored in the wpbot_user and wpbot_conversation tables to an attacker-controlled email address.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in WPBot <= 8.5.9 takes no account at all. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For WPBot the fix is 8.6.0: builds <= 8.5.9 are affected, anything from 8.6.0 onward is not.

Remediation

Update to version 8.6.0, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: WPBot 8.6.0 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-16773 https://www.wordfence.com/threat-intel/vulnerabilities/id/5463548c-22bd-4645-a94d-ee8c6a236337 https://nvd.nist.gov/vuln/detail/CVE-2026-16773

Related records

Same weakness class

5.3CVE-2023-5254: AI ChatBot <= 4.8.9 Sensitive Information ExposureCVE-2023-5254

Other vulnerabilities in WPBot – AI ChatBot for Live Support, Lead Generation, AI Services

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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