CVE-2026-71291 — Bolt CMS Server-Side Template Injection via Unsandboxed allow_twig Field Rendering

CVE-2026-71291

Bolt CMS Server-Side Template Injection via Unsandboxed allow_twig Field Rendering PUBLISHED

Description (CNA)

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allow_twig flag and a regex checking for , , or ; when true, the raw field value is compiled and rendered via with no sandboxing.

Affected (CNA)

Vendor / product	Versions
bolt / core	affected 0 through 6.1

CWE

CWE-1336

References

https://github.com/bolt/core
https://github.com/bolt/core/blob/6.1/src/Entity/Field.php

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.