fix: prevent PDF generation crash on non-latin-1 characters in AI output#114
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PDF report generation crashes with `FPDFUnicodeEncodingException` when AI providers return text containing Unicode characters outside the latin-1 range — most commonly em-dashes (—) in CVE titles, but also en-dashes, smart quotes, and ellipses.
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PDF report generation crashes with
FPDFUnicodeEncodingExceptionwhen AI providers return text containing Unicode characters outside the latin-1 range — most commonly em-dashes (—) in CVE titles, but also en-dashes, smart quotes, and ellipses.fpdf2's built-in helvetica font only supports latin-1 encoding. AI-generated text
(vulnerabilities, remediation steps, security risks, exposed credentials) is passed
directly to
multi_cellwithout sanitization, causing the entire PDF generation stepto fail and produce an empty file.
Reproduced consistently when scanning images with CVE titles containing em-dashes,
for example:
Character "—" at index 41 in text is outside the range of characters supported
by the font used: "helvetica". Please consider using a Unicode font.