CVE-2026-77136

The extension passes the raw value of a form field configured as "This field contains the name of the sender" directly into a Fluid View as template source, without any sanitization, and renders it. An anonymous, unauthenticated user can submit Fluid template syntax in that field to execute arbitrary Fluid ViewHelpers leading to disclosure of server configuration, environment variables and application source, and potentially remote code execution. Exploitation requires only that a form field is configured as the sender_name field, a common and default-adjacent Powermail configuration. No authentication or user interaction beyond a normal form submission is required. This vulnerability is reported to be actively exploited in the wild.

CVSS

No CVSS.

References

Link	Resource
https://typo3.org/security/advisory/typo3-ext-sa-2026-022

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 09:17

Updated : 2026-08-26 17:13

NVD link : CVE-2026-77136

Mitre link : CVE-2026-77136

CVE.ORG link : CVE-2026-77136

JSON object : View

Products Affected

No product.

CWE

CWE-1336

Improper Neutralization of Special Elements Used in a Template Engine

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