{"action":"Upgrade pillow to 12.3.0 or later.","affected":[{"fixed":"12.3.0","introduced":"0"}],"component":"pillow","cve_ids":["CVE-2026-59205"],"ecosystem":"PyPI","epss":0.00385,"exploited":false,"fixed_versions":["12.3.0"],"ghsa_id":"GHSA-9hw9-ch79-4vh6","id":"tcs_01M5KFAZ56QY0H6DXNS7VF74KG","modified_at":"2026-09-10T03:51:11.334365483Z","published_at":"2026-07-20T23:19:00Z","references":["https://osv.dev/vulnerability/GHSA-9hw9-ch79-4vh6","https://github.com/python-pillow/Pillow/security/advisories/GHSA-9hw9-ch79-4vh6","https://nvd.nist.gov/vuln/detail/CVE-2026-59205","https://github.com/python-pillow/Pillow/pull/9715","https://github.com/python-pillow/Pillow/commit/a9ffc42bedf4fc0a7ef8d6486e7f9e81e3397721","https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-3453.yaml","https://github.com/python-pillow/Pillow","https://github.com/python-pillow/Pillow/releases/tag/12.3.0"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-9hw9-ch79-4vh6","url":"https://osv.dev/vulnerability/GHSA-9hw9-ch79-4vh6"}],"summary":"Pillow: Controlled heap out-of-bounds write in Pillow `ImageCmsTransform.apply()` via output mode mismatch"}