CVE-2026-66701Network attack vectorHinoki check available

Attachment ownership takeover via unchecked registration reference

Published Aug 6, 2026 · Updated Aug 6, 2026

Missing authorization in Cozmoslabs Profile Builder 3.16.5 and earlier allows remote attackers to take ownership of attachments. The Email Confirmation registration path accepts an attacker-selected attachment reference and reassigns its ownership without verifying authorization. Exploitation requires registration with Email Confirmation to be enabled and permits integrity changes to existing media ownership.

CVSS severity5.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in Cozmoslabs Profile Builder 3.16.5 and earlier allows remote attackers to take ownership of attachments. The Email Confirmation registration path accepts an attacker-selected attachment reference and reassigns its ownership without verifying authorization. Exploitation requires registration with Email Confirmation to be enabled and permits integrity changes to existing media ownership.

The record

CVE
CVE-2026-66701
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
Cozmoslabs
Product
Profile Builder
Classifications
CWE-862, CAPEC-180, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=3.16.5 changes=[{"at":"3.16.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cozmoslabs · Profile Builderversion=n/a <=3.16.5 changes=[{"at":"3.16.6","status":"unaffected"}]

Published CVSS scores

5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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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