Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in the Registration Statement (Form S-3) and related Prospectus of Codiak BioSciences, Inc. for the registration of common stock, preferred stock, debt securities, warrants, rights and units and to the incorporation by reference therein of our report dated March 17, 2021, with respect to the consolidated financial statements of Codiak Biosciences, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2020, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
Boston, Massachusetts
November 4, 2021
