CVE-2023-2886Network attack vector

Content spoofing via missing WebSocket Origin validation

Published May 25, 2023 · Updated May 22, 2026

Missing WebSocket Origin validation in CBOT Chatbot before Core 4.0.3.4 and Panel 4.0.3.7 allows remote attackers to spoof content. The WebSocket handshake fails to validate the browser-supplied Origin header, allowing a malicious site to send application API messages in the victim's context. Exploitation requires user interaction with attacker-controlled content; the published impact is limited to unauthorized content modification.

CVSS severity4.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing WebSocket Origin validation in CBOT Chatbot before Core 4.0.3.4 and Panel 4.0.3.7 allows remote attackers to spoof content. The WebSocket handshake fails to validate the browser-supplied Origin header, allowing a malicious site to send application API messages in the victim's context. Exploitation requires user interaction with attacker-controlled content; the published impact is limited to unauthorized content modification.

The record

CVE
CVE-2023-2886
Published
May 25, 2023
Updated
May 22, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1385, CAPEC-389, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2023CVE publishedPublication date reported by the CVE source.
  2. May 22, 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?

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

4.3Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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.

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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-1385Missing Origin Validation in WebSockets
CAPEC-389Content Spoofing Via Application API Manipulation
T1565.002Transmitted Data Manipulation

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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Your stack

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