CVE-2024-33556Network attack vector

Arbitrary file placement via missing type validation

Published May 17, 2024 · Updated Apr 28, 2026

Unrestricted file upload in 8theme XStore Core 5.3.8 and earlier allows remote attackers to place arbitrary files on the server. The plugin upload path accepts attacker-supplied files without validating their type; public records do not identify the affected function or request parameter. Patchstack rates the path unauthenticated, while Wordfence requires subscriber access; code execution requires a server-executable upload.

CVSS severity8.2
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in 8theme XStore Core 5.3.8 and earlier allows remote attackers to place arbitrary files on the server. The plugin upload path accepts attacker-supplied files without validating their type; public records do not identify the affected function or request parameter. Patchstack rates the path unauthenticated, while Wordfence requires subscriber access; code execution requires a server-executable upload.

The record

CVE
CVE-2024-33556
Published
May 17, 2024
Updated
Apr 28, 2026
Vendor
8theme
Product
XStore Core
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2024CVE 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.3.8
  2. Affected versionversion=n/a <=5.3.8 changes=[{"at":"5.3.9","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

8theme · XStore Coreversion=0 <=5.3.8; version=n/a <=5.3.8 changes=[{"at":"5.3.9","status":"unaffected"}]

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.9WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.2PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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

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Your stack

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