CVE-2026-89093Public exploitNetwork attack vectorHinoki check available

Private chat disclosure via spoofed bot identity

Published Sep 19, 2026 · Updated Sep 19, 2026

Improper authentication in WordPlus Better Messages 2.15.33 and earlier allows remote attackers to read private chat history via a forged guest. During unauthenticated guest registration, get_client_ip() stores X-Real-IP verbatim, and is_ai_bot_user() trusts the ai-chat-bot- prefix. Guest chat must be enabled; the forged bot identity bypasses room allowlists and permits reading private history and posting messages.

CVSS severity5.3
Medium
EPSS probability0.56%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authentication in WordPlus Better Messages 2.15.33 and earlier allows remote attackers to read private chat history via a forged guest. During unauthenticated guest registration, get_client_ip() stores X-Real-IP verbatim, and is_ai_bot_user() trusts the ai-chat-bot- prefix. Guest chat must be enabled; the forged bot identity bypasses room allowlists and permits reading private history and posting messages.

The record

CVE
CVE-2026-89093
Published
Sep 19, 2026
Updated
Sep 19, 2026
Vendor
WordPlus
Product
Better Messages
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.15.33

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WordPlus · Better Messagesversion=0 <=2.15.33

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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