Open a private security advisory through the Security tab of this repository. No public issue.
This project reads bank files. Two categories come first:
A data leak in the repository. A corpus file that is not anonymised enough is a vulnerability, even if there is no bug. Report it as one.
A parser that returns a wrong amount without an error. In finance, a wrong but plausible result is worse than a crash: it enters a reconciliation and nobody sees it. A silent gap between the file and the output is treated as a vulnerability, not as a bug.