{"id":"CVE-2026-111959","title":"Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads","summary":"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…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cvssSource":"adp","cwe":["CWE-125","CWE-20"],"vendor":"Apache Software Foundation","product":"arrow","affected":["arrow >= 60.0.0 < 60.1.0","arrow >= 59.0.0 <= 59.3.1","arrow >= 58.0.0 <= 58.4.0","arrow >= 33.0.0 <= 57.3.1"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-06T18:35:18.470735Z"},"published":"2026-11-02","updated":"2026-11-06","sourceUpdated":"2026-11-06T18:35:40.676Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111959","references":[{"url":"https://lists.apache.org/thread.html/hnlrdk4w99b188w1zgjlctpwpg7y55o4"},{"url":"https://crates.io/crates/arrow-data"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0442.html"},{"url":"https://github.com/apache/arrow-rs/issues/11587"},{"url":"https://www.openwall.com/lists/oss-security/2026/11/02/2"}],"tags":["cve.org","osv","rust"],"epss":0.00554,"epssPercentile":0.46455,"aliases":["RUSTSEC-2026-0442","GHSA-gqmm-qrjq-4c7h"],"ecosystem":"rust","patched":["arrow-data 60.1.0"],"ingestedAt":"2026-11-05T15:13:27.899Z","slug":"CVE-2026-111959","body":"## Overview\n\nOut-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.\n\n## Affected\n\n- `arrow >= 60.0.0 < 60.1.0`\n- `arrow >= 59.0.0 <= 59.3.1`\n- `arrow >= 58.0.0 <= 58.4.0`\n- `arrow >= 33.0.0 <= 57.3.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-111959)\n\nAffected packages:\n\n- `arrow-data >= 60.0.0, < 60.1.0`\n\nPatched in:\n\n- `arrow-data 60.1.0`\n\nSource: https://osv.dev/vulnerability/RUSTSEC-2026-0442","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":235564,"id":"CVE-2026-111959","ts":1793991735717,"field":"cvss","old":null,"new":"9.1"},{"seq":235563,"id":"CVE-2026-111959","ts":1793991735717,"field":"severity","old":"none","new":"critical"}]}