CVE-2025-8889Public exploitNetwork attack vector

Administrator-only web shell upload via spoofed MIME type

Published Sep 9, 2025 · Updated Nov 13, 2025

Arbitrary file upload in Eli Hanna Compress & Upload before 1.0.5 allows remote authenticated users to place executable files on the server. The /wpctu-api/v1/upload REST route accepts a PHP filename and body presented with an image MIME type and signature instead of enforcing safe extension and MIME validation. Administrator access and a valid WordPress nonce are required; a successful upload can create a web shell in the public media directory and execute server-side commands.

CVSS severity3.8
Low
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Eli Hanna Compress & Upload before 1.0.5 allows remote authenticated users to place executable files on the server. The /wpctu-api/v1/upload REST route accepts a PHP filename and body presented with an image MIME type and signature instead of enforcing safe extension and MIME validation. Administrator access and a valid WordPress nonce are required; a successful upload can create a web shell in the public media directory and execute server-side commands.

The record

CVE
CVE-2025-8889
Published
Sep 9, 2025
Updated
Nov 13, 2025
Vendor
Eli Hanna
Product
Compress & Upload
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 2025Record 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 <1.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Eli Hanna · Compress & Uploadversion=0 <1.0.5

Published CVSS scores

3.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

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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