CVE-2022-45550Network attack vector

Unauthenticated code execution via unrestricted PHP upload

Published Dec 7, 2022 · Updated Apr 23, 2025

Arbitrary code execution in AyaCMS 3.1.2 allows remote attackers to run PHP code by uploading a crafted file through an AJAX endpoint. The upload_file branch in ajax.php invokes include/uploadifive/uploadifive.php, where a commented-out extension check permits PHP uploads beneath upload/~tmp/. No login or user interaction is required; successful exploitation executes attacker-supplied PHP with the web server's privileges.

CVSS severity9.8
Critical
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary code execution in AyaCMS 3.1.2 allows remote attackers to run PHP code by uploading a crafted file through an AJAX endpoint. The upload_file branch in ajax.php invokes include/uploadifive/uploadifive.php, where a commented-out extension check permits PHP uploads beneath upload/~tmp/. No login or user interaction is required; successful exploitation executes attacker-supplied PHP with the web server's privileges.

The record

CVE
CVE-2022-45550
Published
Dec 7, 2022
Updated
Apr 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2022CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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.

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

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-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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