CVE-2026-33431Public exploitNetwork attack vector

Authenticated file read via unchecked configver path

Published Apr 20, 2026 · Updated Apr 20, 2026

Path traversal in Roxy-WI before 8.2.6.4 allows remote authenticated users to read arbitrary host files through the config viewer. The show_config function appends the unvalidated configver request value to configs_dir, while its traversal guard checks only the fixed base path before opening the result. Any authenticated role can reach the endpoint, exposing files readable by the web application process.

CVSS severity6.5
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Roxy-WI before 8.2.6.4 allows remote authenticated users to read arbitrary host files through the config viewer. The show_config function appends the unvalidated configver request value to configs_dir, while its traversal guard checks only the fixed base path before opening the result. Any authenticated role can reach the endpoint, exposing files readable by the web application process.

The record

CVE
CVE-2026-33431
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
Roxy-WI
Product
Roxy-WI
Classifications
CWE-24, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 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=< 8.2.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Roxy-WI · Roxy-WIversion=< 8.2.6.4

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

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-24Path Traversal: '../filedir'
T1005Data from Local System

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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