Qpdf has been updated to the latest version to fix several security issues. - Stack overflow due to endless recursion in QPDFTokenizer::resolveLiteral() - Another stack overflow / endless recursion in QPDFWriter::enqueueObject() - Stack out of bounds read in iteraterc4() - heap out of bounds read (large) in PlBuffer::write - Hang due to a pdf xref loop Also, the cups-filters package has been rebuilt for the new qpdf.