CVE-2023-37733Public exploitNetwork attack vector

Stored XSS via unauthenticated HTML upload

Published Jul 19, 2023 · Updated Jul 9, 2026

Stored XSS in TDuckCloud tduck-platform 4.0 allows remote attackers to execute script in an administrator's browser via an HTML upload. The form upload endpoint accepts an HTML file without authentication, and the administrative data preview renders the stored file so its script executes. Exploitation requires a valid form key and an administrator to preview submitted data, exposing data and actions available to that browser session.

CVSS severity6.1
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in TDuckCloud tduck-platform 4.0 allows remote attackers to execute script in an administrator's browser via an HTML upload. The form upload endpoint accepts an HTML file without authentication, and the administrative data preview renders the stored file so its script executes. Exploitation requires a valid form key and an administrator to preview submitted data, exposing data and actions available to that browser session.

The record

CVE
CVE-2023-37733
Published
Jul 19, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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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