CVE-2026-15106Network attack vector

Unauthenticated chat-session deletion via unverified userid

Published Jul 16, 2026 · Updated Jul 16, 2026

Missing authorization in QuantumCloud WPBot 8.5.6 and earlier allows remote attackers to delete arbitrary chat-session records. The deletion handler in includes/chat-sessions/wpbot-chat-sessions.php trusts the userid request value and deletes matching wpbot_user and wpbot_conversation rows without verifying authorization. No account or user interaction is required, and crafted requests erase stored chat history and conversation logs but do not expose their contents.

CVSS severity5.3
Medium
EPSS probability0.47%
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 QuantumCloud WPBot 8.5.6 and earlier allows remote attackers to delete arbitrary chat-session records. The deletion handler in includes/chat-sessions/wpbot-chat-sessions.php trusts the userid request value and deletes matching wpbot_user and wpbot_conversation rows without verifying authorization. No account or user interaction is required, and crafted requests erase stored chat history and conversation logs but do not expose their contents.

The record

CVE
CVE-2026-15106
Published
Jul 16, 2026
Updated
Jul 16, 2026
Vendor
QuantumCloud
Product
WPBot
Classifications
CWE-862, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 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 <=8.5.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

QuantumCloud · WPBotversion=0 <=8.5.6

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-862Missing Authorization
T1485Data Destruction

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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