CVE-2026-66569Network attack vector

Unauthenticated object injection via unsafe PHP deserialization

Published Oct 10, 2026 · Updated Oct 10, 2026

PHP object injection in AxiomThemes Kicker 2.2.1 and earlier allows remote attackers to instantiate objects via untrusted serialized data. The vendor identifies unsafe unserialize calls on scheme_storage and skin options during skin installation or activation, but does not explicitly tie that locus to this CVE. The CNA reports no authentication or user interaction requirement; the request path and a gadget chain establishing code execution are not public.

CVSS severity9.8
Critical
EPSS probability0.31%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in AxiomThemes Kicker 2.2.1 and earlier allows remote attackers to instantiate objects via untrusted serialized data. The vendor identifies unsafe unserialize calls on scheme_storage and skin options during skin installation or activation, but does not explicitly tie that locus to this CVE. The CNA reports no authentication or user interaction requirement; the request path and a gadget chain establishing code execution are not public.

The record

CVE
CVE-2026-66569
Published
Oct 10, 2026
Updated
Oct 10, 2026
Vendor
AxiomThemes
Product
Kicker
Classifications
CWE-502, CAPEC-586, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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=n/a <=2.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AxiomThemes · Kickerversion=n/a <=2.2.1

Published CVSS scores

9.8PatchstackCVSS: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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 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
CAPEC-586Object Injection
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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