octobercms/october · error · Twig\Sandbox\SecurityNotAllowedPropertyError

Calling "%s" property on a "%s" object is blocked.

Error message

Calling "%s" property on a "%s" object is blocked.

What it means

Error "Calling "%s" property on a "%s" object is blocked." thrown in octobercms/october.

Source

Thrown at modules/system/twig/SecurityPolicyLegacy.php:140

            }
        }

        // Check general methods
        if (in_array($blockedMethod, $this->blockedMethods)) {
            $class = get_class($obj);
            throw new SecurityNotAllowedMethodError(sprintf('Calling "%s" method on a "%s" object is blocked.', $method, $class), $class, $method);
        }
    }

    /**
     * checkPropertyAllowed
     * @throws SecurityNotAllowedPropertyError
     */
    public function checkPropertyAllowed($obj, $property): void
    {
        if (in_array($property, $this->blockedProperties)) {
            $class = get_class($obj);
            throw new SecurityNotAllowedPropertyError(sprintf('Calling "%s" property on a "%s" object is blocked.', $property, $class), $class, $property);
        }
    }
}

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/system/twig/SecurityPolicyLegacy.php:140 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of octobercms/october@b608633a7e (2026-08-21). Data as JSON: /api/errors/5527c1123ee2b99d. Report an issue: GitHub.