CVE-2023-27060Public exploitNetwork attack vector

Authenticated code execution via PHAR deserialization

Published Mar 22, 2023 · Updated Feb 26, 2025

Unsafe PHAR deserialization in LightCMS 1.3.7 allows remote authenticated users to execute arbitrary code through image handling. fetchImageFile passes attacker-controlled remote content to Image::make, whose URL decoder invokes file_get_contents on a phar:// path and deserializes uploaded PHAR metadata through a Laravel gadget chain. Exploitation requires backend image-upload and remote-image-fetch access, and the demonstrated consequence is command execution as the web application.

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

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unsafe PHAR deserialization in LightCMS 1.3.7 allows remote authenticated users to execute arbitrary code through image handling. fetchImageFile passes attacker-controlled remote content to Image::make, whose URL decoder invokes file_get_contents on a phar:// path and deserializes uploaded PHAR metadata through a Laravel gadget chain. Exploitation requires backend image-upload and remote-image-fetch access, and the demonstrated consequence is command execution as the web application.

The record

CVE
CVE-2023-27060
Published
Mar 22, 2023
Updated
Feb 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo