CVE-2023-36464

pypdf is an open source, pure-python PDF library. In affected versions an
attacker may craft a PDF which leads to an infinite loop if
__parse_content_stream is executed. That is, for example, the case if the
user extracted text from such a PDF. This issue was introduced in pull
request #969 and resolved in pull request #1828. Users are advised to
upgrade. Users unable to upgrade may modify the line while peek not in (b"\r", b"\n") in pypdf/generic/_data_structures.py to while peek not in (b"\r", b"\n", b"").