{"id":"CVE-2026-114501","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-114501","generatedAt":"2026-10-28T00:57:20.315Z","title":"Applications that configure alignment and export images to Arrow can therefore disclose one user's pixels or other process memory to another user.","description":"Pillow is a Python imaging library. From 11.2.1 until 13.0.0, Arrow export assumes that an image's rows are tightly contiguous and exports from im->blocks[0].ptr even when PILLOW_ALIGNMENT makes aligned_linesize include row padding or an aligned offset before the first row. The resulting Arrow buffer can include uninitialized padding, bytes preceding the first row, or stale heap contents from previously freed images. Applications that configure alignment and export images to Arrow can therefore disclose one user's pixels or other process memory to another user. This issue is fixed in version 13.0.0.","published":"2026-10-21T22:16:49.000Z","lastModified":"2026-10-27T14:29:01.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-226","CWE-908"],"affected":["python/pillow"],"epss":{"score":0.00469,"percentile":0.40329,"date":"2026-10-26","history":[{"date":"2026-10-22","score":0.00384,"percentile":0.31214}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-21T22:16:49.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-10-21T22:16:49.410Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://github.com/python-pillow/Pillow/commit/19f64946eb247b973dd4560be7dea3bf979d2e6a","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/python-pillow/Pillow/pull/10172","tags":["Issue Tracking"],"source":"security-advisories@github.com"},{"url":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-654x-cwwv-5j9c","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-114501","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}