CVE-2023-5762Public exploitNetwork attack vector

Server command execution via unchecked executable uploads

Published Dec 4, 2023 · Updated Aug 2, 2024

Code injection in WP Chill Filr before 1.2.3.6 allows remote authenticated users with Author access to execute server commands. The upload_file action blocks .php files but accepts executable .phar and .phtml extensions, storing them beneath the web-accessible Filr uploads path. Author-level access is required; requesting the uploaded file executes its PHP payload with the web server's privileges.

CVSS severity8.8
High
EPSS probability2.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in WP Chill Filr before 1.2.3.6 allows remote authenticated users with Author access to execute server commands. The upload_file action blocks .php files but accepts executable .phar and .phtml extensions, storing them beneath the web-accessible Filr uploads path. Author-level access is required; requesting the uploaded file executes its PHP payload with the web server's privileges.

The record

CVE
CVE-2023-5762
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
WP Chill
Product
Filr
Classifications
CWE-94, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <1.2.3.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WP Chill · Filrversion=0 <1.2.3.6

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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