CVE-2026-3327 PUBLISHED

Authenticated DatoCMS Web Previews Plugin Iframe Injection

Assigner: Intigriti
Reserved: 27.02.2026 Published: 27.02.2026 Updated: 27.02.2026

Authenticated Iframe Injection in Dato CMS Web Previews plugin. This vulnerability permits a malicious authenticated user to circumvent the restriction enforced on the configured frontend URL, enabling the loading of arbitrary external resources or origins. This issue affects Web Previews < v1.0.31.

Metrics

CVSS 4.0

CVSS Vector: CVSS: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 Score: 4.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	Active

CVSS 4.0

Product Status

Vendor	DatoCMS
Product	Web Previews
Versions	Default: unaffected Version < 1.0.31 is affected

Credits

Ayoub Benlamchich (INTIGRITI) finder

References

https://github.com/datocms/plugins/commit/7965eebf0973cc5ebb18bc5ff9ce7ff19e89bb2e

Problem Types

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