CVE-2019-12498Network attack vector

Unauthenticated chat manipulation via inverted login check

Published Mar 20, 2020 · Updated Aug 4, 2024

Missing authorization in WP Live Chat Support before 8.0.33 allows remote attackers to read chat logs and manipulate chat sessions via REST requests. The wplc_api_permission_check function returns true when is_user_logged_in reports false, so accept_chat, end_chat, and send_message accept requests without nonce validation. No account or user interaction is required; an attacker can exfiltrate chat logs, send messages, accept chats, or terminate sessions.

CVSS severity9.8
Critical
EPSS probability1.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in WP Live Chat Support before 8.0.33 allows remote attackers to read chat logs and manipulate chat sessions via REST requests. The wplc_api_permission_check function returns true when is_user_logged_in reports false, so accept_chat, end_chat, and send_message accept requests without nonce validation. No account or user interaction is required; an attacker can exfiltrate chat logs, send messages, accept chats, or terminate sessions.

The record

CVE
CVE-2019-12498
Published
Mar 20, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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