CVE-2026-71247 Documenso: Assistant Recipient Can Forge Another Signer's Signature in Sequential-Signing Documents

Documenso's sign-field-with-token.ts, used by the live document-signing UI, allows a recipient with the ASSISTANT role to fetch and complete fields belonging to any later-or-equal-order, not-yet-signed recipient in the same envelope, with no restriction on field type. The handler upserts a...