CVE-2026-75308Network attack vector

Cross-site scripting via unvalidated file uploads

Published Sep 9, 2026 · Updated Sep 9, 2026

Cross-site scripting in yshopmall 3.3 and earlier allows attackers to execute browser-side script through an uploaded file. The /api/upload endpoint accepts HTML, JSP, and other executable file types without validating the uploaded file type. Exploitation requires the malicious upload to be served and opened in a browser; the public record does not state whether upload access requires authentication.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in yshopmall 3.3 and earlier allows attackers to execute browser-side script through an uploaded file. The /api/upload endpoint accepts HTML, JSP, and other executable file types without validating the uploaded file type. Exploitation requires the malicious upload to be served and opened in a browser; the public record does not state whether upload access requires authentication.

The record

CVE
CVE-2026-75308
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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