CVE-2023-1650Public exploitNetwork attack vector

Object injection via unserialized cookie data

Published May 8, 2023 · Updated Feb 4, 2025

PHP object injection in QuantumCloud WPBot before 4.4.7 allows remote attackers to inject objects through a crafted cookie. The unauthenticated openai_response AJAX action base64-decodes the last_five_prompt cookie and passes its contents to unserialize(). Exploitation requires the GPT engine to use the OpenAI model and a suitable gadget chain; resulting effects depend on that chain.

CVSS severity9.8
Critical
EPSS probability34.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in QuantumCloud WPBot before 4.4.7 allows remote attackers to inject objects through a crafted cookie. The unauthenticated openai_response AJAX action base64-decodes the last_five_prompt cookie and passes its contents to unserialize(). Exploitation requires the GPT engine to use the OpenAI model and a suitable gadget chain; resulting effects depend on that chain.

The record

CVE
CVE-2023-1650
Published
May 8, 2023
Updated
Feb 4, 2025
Vendor
QuantumCloud
Product
WPBot
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2025Record 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 <4.4.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

QuantumCloud · WPBotversion=0 <4.4.7

Published CVSS scores

9.8NVDCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
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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Your stack

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