CVE-2026-6403Public exploitNetwork attack vector

Unauthenticated file read via stylesheet path traversal

Published May 15, 2026 · Updated May 15, 2026

Path traversal in Carr Communications Inc. Quick Playground 1.3.3 and earlier allows remote attackers to read server files via stylesheet input. The qckply_zip_theme() function appends the user-controlled stylesheet value to the theme root without canonicalizing the result or rejecting traversal sequences, then archives the resolved directory. No authentication is required; the resulting ZIP can expose any server file readable by the WordPress process, including wp-config.php.

CVSS severity7.5
High
EPSS probability0.81%
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 Carr Communications Inc. Quick Playground 1.3.3 and earlier allows remote attackers to read server files via stylesheet input. The qckply_zip_theme() function appends the user-controlled stylesheet value to the theme root without canonicalizing the result or rejecting traversal sequences, then archives the resolved directory. No authentication is required; the resulting ZIP can expose any server file readable by the WordPress process, including wp-config.php.

The record

CVE
CVE-2026-6403
Published
May 15, 2026
Updated
May 15, 2026
Vendor
Carr Communications Inc.
Product
Quick Playground
Classifications
CWE-22, CAPEC-126, T1005, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 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=0 <=1.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Carr Communications Inc. · Quick Playgroundversion=0 <=1.3.3

Published CVSS scores

7.5WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1005Data from Local System
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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