{"schema_version":"1.7.5","id":"BIT-pillow-2026-59200","published":"2026-07-19T23:50:22.501Z","modified":"2026-07-23T15:11:28.034031834Z","aliases":["CVE-2026-59200","GHSA-jjj6-mw9f-p565","PYSEC-2026-3495"],"summary":"Pillow: Decompression Bomb DoS via PdfParser.PdfStream.decode()","details":"Pillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.","affected":[{"package":{"name":"pillow","ecosystem":"Bitnami","purl":"pkg:bitnami/pillow"},"ranges":[{"type":"SEMVER","events":[{"introduced":"5.1.0"},{"fixed":"12.3.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/pillow/BIT-pillow-2026-59200.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"}]}],"references":[{"type":"WEB","url":"https://github.com/python-pillow/Pillow/commit/f7a31ea75e460e108c37126da1f47812f21f6b09"},{"type":"WEB","url":"https://github.com/python-pillow/Pillow/pull/9718"},{"type":"WEB","url":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0"},{"type":"WEB","url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-jjj6-mw9f-p565"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59200"}],"database_specific":{"cpes":["cpe:2.3:a:python:pillow:*:*:*:*:*:python:*:*"],"severity":"High"}}