{"id":"CVE-2026-59200","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.","aliases":["GHSA-jjj6-mw9f-p565"],"modified":"2026-07-17T09:44:28.279823425Z","published":"2026-07-14T16:09:05.091Z","related":["SUSE-SU-2026:3084-1","openSUSE-SU-2026:11283-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400","CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59200.json"},"references":[{"type":"WEB","url":"https://github.com/python-pillow/Pillow/releases/tag/12.3.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59200.json"},{"type":"ADVISORY","url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-jjj6-mw9f-p565"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59200"},{"type":"FIX","url":"https://github.com/python-pillow/Pillow/commit/f7a31ea75e460e108c37126da1f47812f21f6b09"},{"type":"FIX","url":"https://github.com/python-pillow/Pillow/pull/9718"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python-pillow/pillow","events":[{"introduced":"fda33d5c09142c4bb0e99964919d01c2cc5f5995"},{"fixed":"f7a31ea75e460e108c37126da1f47812f21f6b09"},{"fixed":"bb1d8e8ab8d29048624d96e3ee53cecf7c13d13d"}],"database_specific":{"extracted_events":[{"introduced":"5.1.0"},{"fixed":"12.3.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["12.2.0","12.1.0","12.0.0","11.3.0","11.2.1","11.1.0","11.0.0","10.4.0","10.3.0","10.2.0","10.1.0","10.0.0","9.5.0","9.4.0","9.3.0","9.2.0","9.1.0","9.0.0","8.4.0","8.3.0","8.2.0","8.1.0","8.0.0","7.2.0","7.1.0","7.0.0","6.2.0","6.1.0","6.0.0","5.4.0","5.3.0","5.2.0","5.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59200.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}