Financial liabilities - Disclosure of conditional advances (Details) - EUR (€) € in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|---|---|
| Disclosure of detailed information about borrowings [line items] | ||||
| Conditional advances | € 0 | € 0 | € 6,771 | |
| RNP VIR – Bpifrance | ||||
| Disclosure of detailed information about borrowings [line items] | ||||
| Conditional advances | 0 | 0 | € 2,945 | 4,232 |
| CARENA – Bpifrance | ||||
| Disclosure of detailed information about borrowings [line items] | ||||
| Conditional advances | 0 | 0 | € 3,255 | 2,485 |
| EBOLA – Bpifrance | ||||
| Disclosure of detailed information about borrowings [line items] | ||||
| Conditional advances | € 0 | € 0 | € 55 |