{"cve":"CVE-2026-114501","nvd":{"published":"2026-10-21T22:16:49.410","modified":"2026-10-22T16:46:48.920","status":"Undergoing Analysis","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.","cvss_v4":{"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","score":6.3},"cvss_v3":null,"cwes":["CWE-226","CWE-908"],"references":["https://github.com/python-pillow/Pillow/commit/19f64946eb247b973dd4560be7dea3bf979d2e6a","https://github.com/python-pillow/Pillow/pull/10172","https://github.com/python-pillow/Pillow/releases/tag/13.0.0","https://github.com/python-pillow/Pillow/security/advisories/GHSA-654x-cwwv-5j9c"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:28.036610720+00:00"},"epss":{"cve":"CVE-2026-114501","score":0.00469,"percentile":0.40309,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-654x-cwwv-5j9c","url":"https://osv.dev/vulnerability/GHSA-654x-cwwv-5j9c","summary":"Pillow: Arrow export leaks stale heap memory when PILLOW_ALIGNMENT > 1","modified":"2026-10-23T22:00:03.744757414Z","packages":[{"ecosystem":"PyPI","name":"pillow","purl":"pkg:pypi/pillow","ranges":[">=11.2.1 <13.0.0"],"fixed":["13.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}