CVE-2025-10755Public exploitNetwork attack vector

Arbitrary file upload via spoofed MIME type

Published Sep 20, 2025 · Updated Sep 22, 2025

Unrestricted file upload in Selleo Mentingo 2025.08.27 allows remote authenticated users to store arbitrary content via userAvatar. The upload handler trusts the client-supplied multipart Content-Type value without verifying file signatures, inspecting content, or cross-checking the filename extension. A low-privileged account can label an HTML file as an accepted image type, causing storage in S3 or MinIO and exposure through a presigned URL.

CVSS severity6.3
Medium
EPSS probability0.26%
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 Selleo Mentingo 2025.08.27 allows remote authenticated users to store arbitrary content via userAvatar. The upload handler trusts the client-supplied multipart Content-Type value without verifying file signatures, inspecting content, or cross-checking the filename extension. A low-privileged account can label an HTML file as an accepted image type, causing storage in S3 or MinIO and exposure through a presigned URL.

The record

CVE
CVE-2025-10755
Published
Sep 20, 2025
Updated
Sep 22, 2025
Vendor
Selleo
Product
Mentingo
Classifications
CWE-434, CWE-284, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 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=2025.08.27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Selleo · Mentingoversion=2025.08.27

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control
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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