CVE-2026-65581Network attack vector

Unauthenticated object injection via unsafe skin deserialization

Published Aug 6, 2026 · Updated Aug 6, 2026

PHP object injection in AxiomThemes AI ANN 1.29.0 and earlier allows remote attackers to inject objects through unauthenticated requests. During skin installation or activation, the theme unserializes scheme_storage and skin option data without validating it first. Patchstack has not disclosed the request endpoint; a usable POP chain determines whether injected objects execute code, alter data, or interrupt service.

CVSS severity9.8
Critical
EPSS probability0.30%
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 AxiomThemes AI ANN 1.29.0 and earlier allows remote attackers to inject objects through unauthenticated requests. During skin installation or activation, the theme unserializes scheme_storage and skin option data without validating it first. Patchstack has not disclosed the request endpoint; a usable POP chain determines whether injected objects execute code, alter data, or interrupt service.

The record

CVE
CVE-2026-65581
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
AxiomThemes
Product
AI ANN
Classifications
CWE-502, CAPEC-586, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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 <=1.29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AxiomThemes · AI ANNversion=n/a <=1.29.0

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.

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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-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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