CVE-2023-4971Network attack vector

Authenticated PHP object injection via imported file

Published Oct 16, 2023 · Updated Apr 23, 2025

Deserialization of untrusted data in WPWeaver Weaver Xtreme Theme Support before 6.3.1 allows remote authenticated users to trigger PHP object injection via an imported file. The import handler unserialises file content without safe validation, allowing attacker-controlled PHP object graphs when a suitable gadget chain exists. High-privilege access and a reachable WordPress administration interface are required, and successful exploitation can affect confidentiality, integrity, and availability.

CVSS severity7.2
High
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization of untrusted data in WPWeaver Weaver Xtreme Theme Support before 6.3.1 allows remote authenticated users to trigger PHP object injection via an imported file. The import handler unserialises file content without safe validation, allowing attacker-controlled PHP object graphs when a suitable gadget chain exists. High-privilege access and a reachable WordPress administration interface are required, and successful exploitation can affect confidentiality, integrity, and availability.

The record

CVE
CVE-2023-4971
Published
Oct 16, 2023
Updated
Apr 23, 2025
Vendor
WPWeaver
Product
Weaver Xtreme Theme Support
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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 <6.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPWeaver · Weaver Xtreme Theme Supportversion=0 <6.3.1

Published CVSS scores

7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
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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