{"id":"BIT-pillow-2026-59203","summary":"Pillow EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service","details":"Pillow is a Python imaging library. From 12.0.0 through 12.2.0, Pillow's EPS parser in PIL/EpsImagePlugin.py accepts a negative byte count in the %%BeginBinary directive, allowing a crafted EPS file to cause Image.open() to seek backwards to the same directive and parse it repeatedly in an infinite loop. This issue is fixed in version 12.3.0.","aliases":["CVE-2026-59203","GHSA-pg7v-jwj7-p798","PYSEC-2026-3452"],"modified":"2026-09-08T08:47:46.864015509Z","published":"2026-07-15T08:54:59.851Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*"]},"references":[{"type":"FIX","url":"https://github.com/python-pillow/Pillow/commit/03992618118b4a76b6163cd72ab5ecd684133b83"},{"type":"FIX","url":"https://github.com/python-pillow/Pillow/pull/9708"},{"type":"ARTICLE","url":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0"},{"type":"ADVISORY","url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-pg7v-jwj7-p798"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59203"}],"affected":[{"package":{"name":"pillow","ecosystem":"Bitnami","purl":"pkg:bitnami/pillow"},"ranges":[{"type":"SEMVER","events":[{"introduced":"12.0.0"},{"fixed":"12.3.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-59203.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}