# Reusing Signatures

### Summary:

<https://code4rena.com/reports/2022-08-rigor/#h-03-builder-can-call-communityescrow-again-to-reduce-debt-further-using-same-signatures>\
<https://code4rena.com/reports/2022-08-rigor/#h-04-project-funds-can-be-drained-by-reusing-signatures-in-some-cases>\
<https://code4rena.com/reports/2022-08-rigor/#m-13-in-projectsetcomplete-the-signature-can-be-reused-when-the-first-call-is-reverted-for-some-reason>

Since there is no nonce in the data decoded at the beginning of function `escrow`, a builder can call the function multiple times reducing their debt as much as they wish.

### Mitigation:

Modify function `escrow` to check this nonce and update it after the debt has been reduced.

### TAGS: #sig

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