Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Cash flows from operating activities:
Net loss	$ (14,535,814)	$ (11,152,438)
Adjustments to reconcile net loss to net cash used in operating activities:
Accretion of discount on marketable securities, net	(89,243)	(486,494)
Stock-based compensation expense	711,471	858,182
Changes in operating assets and liabilities:
Prepaid expenses and other assets	533,287	(58,967)
Deferred offering costs	0	(163,354)
Accounts payable	(767,007)	272,592
Accrued expenses and other current liabilities	(1,216,450)	428,169
Grant receivable	426,993	(106,744)
Net cash used in operating activities	(14,936,763)	(10,409,054)
Cash flows from investing activities:
Purchase of marketable securities	(3,463,092)	(16,858,416)
Maturities of marketable securities	13,700,000	22,000,000
Net cash provided by investing activities	10,236,908	5,141,584
Cash flows from financing activities:
Proceeds from the exercise of stock options	13,800	0
Net cash provided by financing activities	18,926,963	4,588,687
Net (decrease) increase in cash and cash equivalents	14,227,108	(678,783)
Cash and cash equivalents at beginning of period	8,235,469	8,999,496
Cash and cash equivalents at end of period	22,462,577	8,320,713
Supplemental disclosure of non-cash investing and financing activities:
Offering costs in accrued expenses	359,514
Deferred offering costs in accounts payable	0	61,577
Unrealized loss on marketable securities	(5,710)	(56,980)
Private Placement [Member]
Cash flows from financing activities:
Proceeds from the issuance of common stock, net of issuance costs - 2026 Private Placement	9,685,402	0
2026 Registered Direct Offering [Member]
Cash flows from financing activities:
Proceeds from the issuance of common stock, net of issuance costs - 2026 Private Placement	9,227,761	0
Open Market Sales Agreement [Member]
Cash flows from financing activities:
Proceeds from the issuance of common stock, net of issuance costs - 2026 Private Placement	$ 0	$ 4,588,687

The amount of debt offering costs that were incurred during a noncash or partial noncash transaction.

No definition available.

Name:	crvo_DebtOfferingCostsIncurredDuringNoncashOrPartialNoncashTransaction
Namespace Prefix:	crvo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.