CVE-2024-5335Network attack vector

Object injection via deserialized compare-products cookie

Published Aug 21, 2024 · Updated Apr 8, 2026

PHP object injection in BdThemes Ultimate Store Kit 1.6.4 and earlier allows remote attackers to inject objects through a crafted cookie. The compare-products handler in includes/helper.php passes the client-controlled _ultimate_store_kit_compare_products cookie to PHP deserialization, permitting object instantiation. Exploitation requires no authentication, but destructive file, data, or code effects require a usable POP chain supplied by another installed plugin or theme.

CVSS severity9.8
Critical
EPSS probability0.85%
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 BdThemes Ultimate Store Kit 1.6.4 and earlier allows remote attackers to inject objects through a crafted cookie. The compare-products handler in includes/helper.php passes the client-controlled _ultimate_store_kit_compare_products cookie to PHP deserialization, permitting object instantiation. Exploitation requires no authentication, but destructive file, data, or code effects require a usable POP chain supplied by another installed plugin or theme.

The record

CVE
CVE-2024-5335
Published
Aug 21, 2024
Updated
Apr 8, 2026
Vendor
BdThemes
Product
Ultimate Store Kit
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=1.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BdThemes · Ultimate Store Kitversion=0 <=1.6.4

Published CVSS scores

9.8WordfenceCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
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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