\documentclass[12pt,space=onehalf,fncychap=Bjornstrup]{yathesis}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{kpfonts}
\usepackage{booktabs}
\usepackage{pdfpages}
\usepackage{siunitx}
\usepackage{pgfplots}
\usepackage{floatrow}
\usepackage{caption}
\usepackage{graphicx}
\usepackage{listings}
\usepackage{microtype}
\usepackage{varioref}
\usepackage{multirow}
\usepackage{array}
\usepackage{chemformula}
\usepackage{xcolor}
\usepackage[xindy,quiet]{imakeidx}
\usepackage[autostyle]{csquotes}
\usepackage[backend=biber,sorting=none,safeinputenc,style=numeric-comp]{biblatex}
\usepackage{hyperref}
\usepackage[xindy,acronyms,symbols]{glossaries}
\addbibresource{bibliographie/biblthese.bib}
\loadglsentries{auxiliaires/acronymes}
\makeindex
\makeglossaries
\begin{document}
\maketitle[frametitle=shadowbox]
\mainmatter
\include{corps/introduction}
\selectlanguage{french}
\printbibliography
\makeatletter\@openrightfalse
\chapter{CV et productions scientifiques}
\includepdf[addtotoc={1,section,1,CV,f1}, pages=-]{./CV/cv.pdf}
\@openrighttrue\makeatother
\includepdf[addtotoc={1,section,1,Fats and Oils as Renewable Feedstock for the Chemical Industry Workshop - Karlsruhe ,f2}, scale=0.9]{./annexesosterKarlsruhe.pdf}
Merci de faire un ECM compilable sans rien changer.
En tous cas, je pense que vous pouvez atteint votre but avec
{\let\cleardoublepage\clearpage \chapter{CV et productions scientifiques}} \includepdf[addtotoc={1,section,1,CV,f1}, pages=1-5]{./CV/cv.pdf}