CVE-2026-92567Network attack vector

Authenticated form-response overwrite via missing ownership validation

Published Sep 16, 2026 · Updated Sep 17, 2026

Authorization bypass in TDuckCloud tduck-survey-form 5.0 and earlier allows remote authenticated users to overwrite other users' submissions. The POST /user/form/data/update handler accepts a caller-supplied submission identifier and updates the record without verifying that the authenticated account owns the targeted response. Any authenticated account can enumerate narrowly allocated identifiers and replace arbitrary response content, including stored personal data.

CVSS severity7.1
High
EPSS probability0.42%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in TDuckCloud tduck-survey-form 5.0 and earlier allows remote authenticated users to overwrite other users' submissions. The POST /user/form/data/update handler accepts a caller-supplied submission identifier and updates the record without verifying that the authenticated account owns the targeted response. Any authenticated account can enumerate narrowly allocated identifiers and replace arbitrary response content, including stored personal data.

The record

CVE
CVE-2026-92567
Published
Sep 16, 2026
Updated
Sep 17, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-639, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
6.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1565.001Stored Data Manipulation

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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