{"id":"CVE-2026-112405","title":"Pillow: NULL pointer dereference in Image.merge via an unvalidated band 0","summary":"Pillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band, allowing a 32-bit integer or floating-point image backed by image32 storage …","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-476"],"vendor":"python-pillow","product":"Pillow","affected":["Pillow >= 12.0.0, < 13.0.0"],"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T21:29:53.515Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112405","references":[{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-cp9v-662q-vvx9","label":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-cp9v-662q-vvx9"},{"url":"https://github.com/python-pillow/Pillow/commit/b6ee66e8b2c2c0932bdf65f963268d9f2927ef86","label":"https://github.com/python-pillow/Pillow/commit/b6ee66e8b2c2c0932bdf65f963268d9f2927ef86"},{"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"],"ingestedAt":"2026-10-19T21:43:56.115Z","slug":"CVE-2026-112405","body":"## Overview\n\nPillow is a Python imaging library. From 12.0.0 until 13.0.0, Pillow's Image.merge() can dereference a null image8 plane. Validation skips the first input band, allowing a 32-bit integer or floating-point image backed by image32 storage to be merged as a narrower multiband image. A crafted IPTC file can reach this path when an application opens and loads it, or a caller can invoke Image.merge() directly with such a first band. This causes a native process crash. This issue is fixed in version 13.0.0.\n\n## Affected\n\n- `Pillow >= 12.0.0, < 13.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}