In Exiv2 0.26, Exiv2::IptcParser::decode in iptc.cpp (called from psdimage.cpp in the PSD image reader) may suffer from a denial of service (heap-based buffer over-read) caused by an integer overflow via a crafted PSD image file.
"https://github.com/pypa/advisory-database/blob/main/vulns/exiv2/PYSEC-2018-141.yaml"