CVE-2026-3327Network attack vector

Authenticated external-origin loading via unvalidated redirect path

Published Feb 27, 2026 · Updated Feb 27, 2026

Iframe injection in DatoCMS Web Previews before 1.0.31 allows remote authenticated users to load external origins in Visual Editing. The Inspector UI accepts path values from URL or content-link state and passes them to the draft-mode redirect without enforcing the configured origin. Visual Editing must be enabled, and authenticated editor access is required; attacker-selected content then loads inside the preview iframe.

CVSS severity4.8
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Iframe injection in DatoCMS Web Previews before 1.0.31 allows remote authenticated users to load external origins in Visual Editing. The Inspector UI accepts path values from URL or content-link state and passes them to the draft-mode redirect without enforcing the configured origin. Visual Editing must be enabled, and authenticated editor access is required; attacker-selected content then loads inside the preview iframe.

The record

CVE
CVE-2026-3327
Published
Feb 27, 2026
Updated
Feb 27, 2026
Vendor
DatoCMS
Product
Web Previews
Classifications
CWE-79
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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=< 1.0.31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

DatoCMS · Web Previewsversion=< 1.0.31

Published CVSS scores

4.8IntigritiCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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