{"id":"CVE-2026-112397","title":"Pillow: Out-of-bounds access in _imagingmorph on a zero-width image","summary":"Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routi…","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-787"],"vendor":"python-pillow","product":"Pillow","affected":["Pillow < 13.0.0"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-19T21:37:56.314774Z"},"exploitAvailable":true,"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T21:38:18.176Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112397","references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8","label":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-58r4-6rv3-gfh8"},{"url":"https://github.com/python-pillow/Pillow/commit/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64","label":"https://github.com/python-pillow/Pillow/commit/18f7c0dfee93063c51db6ed0ca8c4da2999dcb64"},{"url":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0","label":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0"}],"tags":["cve.org","exploit-available"],"ingestedAt":"2026-10-19T21:43:56.110Z","slug":"CVE-2026-112397","body":"## Overview\n\nPillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.\n\n## Affected\n\n- `Pillow < 13.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":60,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}