v3.25.3
Cover
9 Months Ended
Sep. 30, 2025
Cover [Abstract]  
Document Type 6-K
Entity Registrant Name VALNEVA SE
Entity Central Index Key 0001836564
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q3
Current Fiscal Year End Date --12-31
Document Period End Date Sep. 30, 2025