| Cover | May 15, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 15, 2023 |
| Entity File Number | 001-36581 |
| Entity Registrant Name | vascular biogenics ltd. |
| Entity Central Index Key | 0001603207 |
| Entity Incorporation, State or Country Code | L3 |
| Entity Address, Address Line One | 8 HaSatat St. |
| Entity Address, City or Town | Modi’in |
| Entity Address, Country | IL |
| Entity Address, Postal Zip Code | 7178106 |
| Local Phone Number | +972-8-9935000 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Ordinary Shares, par value NIS 0.01 each |
| Trading Symbol | VBLT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
