pillow is vulnerable to regular expression denial of service. Usage of an insecure regex allows an attacker to cause excessive CPU consumption when parsing a malicious PDF file.
github.com/python-pillow/Pillow/commit/3bce145966374dd39ce58a6fc0083f8d1890719c
lists.fedoraproject.org/archives/list/[email protected]/message/S7G44Z33J4BNI2DPDROHWGVG2U7ZH5JU/
lists.fedoraproject.org/archives/list/[email protected]/message/TQQY6472RX4J2SUJENWDZAWKTJJGP2ML/
lists.fedoraproject.org/archives/list/[email protected]/message/ZTSY25UJU7NJUFHH3HWT575LT4TDFWBZ/
pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html
security.gentoo.org/glsa/202107-33