CVE-2021-31567Network attack vector

Arbitrary file read via unconstrained download path

Published Jan 28, 2022 · Updated Apr 28, 2026

Path traversal in WPChill Download Monitor 4.4.6 and earlier allows remote authenticated users to read arbitrary server files. The downloadable_file_urls[0] parameter accepts attacker-controlled paths without enforcing the web-server home-directory boundary. Administrator access is required; exposure is limited to files readable by the WordPress/PHP process, including wp-config.php and files outside the web root.

CVSS severity6.8
Medium
EPSS probability1.39%
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

Path traversal in WPChill Download Monitor 4.4.6 and earlier allows remote authenticated users to read arbitrary server files. The downloadable_file_urls[0] parameter accepts attacker-controlled paths without enforcing the web-server home-directory boundary. Administrator access is required; exposure is limited to files readable by the WordPress/PHP process, including wp-config.php and files outside the web root.

The record

CVE
CVE-2021-31567
Published
Jan 28, 2022
Updated
Apr 28, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200, T1005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
6.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
6.8NVDAV:N/AC:L/Au:S/C:C/I:N/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

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

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