{"id":"CVE-2026-111959","aliases":["EUVD-2026-115182","GHSA-gqmm-qrjq-4c7h","RUSTSEC-2026-0442"],"status":"published","title":"Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads","description":"Out-of-bounds read vulnerability in Apache Arrow Rust (`arrow` crate), from version 33.0.0 through to versions 57.3.1, 58.4.0, 59.3.1 and 60.0.0.\n\n\n\nImproper validation of RunEndEncoded arrays in the ArrayData interface can allow reading data beyond the bounds of the child values array.\n\n\n\nUsers are recommended to upgrade to versions 60.1.0, 59.3.2, 58.4.1, 57.3.2 which fixes the issue.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00554,"percentile":0.4672,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125","CWE-20"],"published":"2026-11-02T12:00:00Z","modified":"2026-11-06T18:35:40Z","fixes":[{"ecosystem":"crates.io","package":"arrow-data","fixed_in":["57.3.2","58.4.1","59.3.2","60.1.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"crates.io","package":"arrow-data","ranges":[{"type":"SEMVER","events":[{"introduced":"33.0.0"},{"fixed":"57.3.2"},{"introduced":"58.0.0"},{"fixed":"58.4.1"},{"introduced":"59.0.0"},{"fixed":"59.3.2"},{"introduced":"60.0.0"},{"fixed":"60.1.0"}]}]}],"products":[{"vendor":"apache software foundation","product":"apache arrow rust"}],"references":[{"url":"https://lists.apache.org/thread.html/hnlrdk4w99b188w1zgjlctpwpg7y55o4","tags":["vendor-advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/11/02/2"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111959"},{"url":"https://github.com/advisories/GHSA-gqmm-qrjq-4c7h"},{"url":"https://crates.io/crates/arrow-data","tags":["package"]},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0442.html","tags":["advisory"]},{"url":"https://github.com/apache/arrow-rs/issues/11587","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2026/11/02/2","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-111959","title":"Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads","description":"Out-of-bounds read vulnerability in Apache Arrow Rust (`arrow` crate), from version 33.0.0 through to versions 57.3.1, 58.4.0, 59.3.1 and 60.0.0.\n\n\n\nImproper validation of RunEndEncoded arrays in the ArrayData interface can allow reading data beyond the bounds of the child values array.\n\n\n\nUsers are recommended to upgrade to versions 60.1.0, 59.3.2, 58.4.1, 57.3.2 which fixes the issue.","status":"published","published":"2026-11-02T13:34:17.835Z","modified":"2026-11-06T18:35:40.676Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-125","CWE-20"],"updated_at":"2026-11-06T19:59:18.98792Z"}],"euvd":[{"id":"EUVD-2026-115182","description":"Out-of-bounds read vulnerability in Apache Arrow Rust (`arrow` crate), from version 33.0.0 through to versions 57.3.1, 58.4.0, 59.3.1 and 60.0.0.\n\n\n\nImproper validation of RunEndEncoded arrays in the ArrayData interface can allow reading data beyond the bounds of the child values array.\n\n\n\nUsers are recommended to upgrade to versions 60.1.0, 59.3.2, 58.4.1, 57.3.2 which fixes the issue.","status":"published","published":"2026-11-02T13:34:17Z","modified":"2026-11-06T18:35:40Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-06T20:06:06.199621Z"}],"ghsa":[{"id":"GHSA-gqmm-qrjq-4c7h","title":"Out-of-bounds read vulnerability in Apache Arrow Rust (`arrow` crate), from version 33.0.0...","description":"Out-of-bounds read vulnerability in Apache Arrow Rust (`arrow` crate), from version 33.0.0 through to versions 57.3.1, 58.4.0, 59.3.1 and 60.0.0.\n\n\n\nImproper validation of RunEndEncoded arrays in the ArrayData interface can allow reading data beyond the bounds of the child values array.\n\n\n\nUsers are recommended to upgrade to versions 60.1.0, 59.3.2, 58.4.1, 57.3.2 which fixes the issue.","status":"published","published":"2026-11-02T15:31:33Z","modified":"2026-11-02T21:31:51Z","cwes":["CWE-20"],"updated_at":"2026-11-03T00:02:47.574481Z"}],"nvd":[{"id":"CVE-2026-111959","description":"Out-of-bounds read vulnerability in Apache Arrow Rust (`arrow` crate), from version 33.0.0 through to versions 57.3.1, 58.4.0, 59.3.1 and 60.0.0.\n\n\n\nImproper validation of RunEndEncoded arrays in the ArrayData interface can allow reading data beyond the bounds of the child values array.\n\n\n\nUsers are recommended to upgrade to versions 60.1.0, 59.3.2, 58.4.1, 57.3.2 which fixes the issue.","status":"published","published":"2026-11-02T14:17:35.493Z","modified":"2026-11-06T19:17:33.687Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-20","CWE-125"],"updated_at":"2026-11-06T22:02:16.10095Z"}],"osv":[{"id":"RUSTSEC-2026-0442","title":"Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads","description":"Improper validation of RunEndEncoded arrays via `ArrayData::validate_values` can\nallow reading data beyond the bounds of the child values array when reading the\nlast value via APIs such as `TypedRunArray::value`.\n\nPatched versions now properly validate the contents of RunEndEncoded arrays to prevent\nallowing reading out of bounds of the specified array data.\n\nCredit to Adam Korczynski of Ada Logics for reporting this and Anthropic for finding\nthis.","status":"published","published":"2026-11-02T12:00:00Z","modified":"2026-11-05T09:00:02.631916531Z","updated_at":"2026-11-05T09:08:14.330889Z"}]}}