Vulnerability · Published Nov 2, 2026 · Assigned by apache
CVE-2026-111959Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads
Unrated
In plain English
A out-of-bounds read in Apache Arrow Rust from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 85.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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. Improper validation of RunEndEncoded arrays in the ArrayData interface can allow reading data beyond the bounds of the child values array. Users are recommended to upgrade to versions 60.1.0, 59.3.2, 58.4.1, 57.3.2 which fixes the issue.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Arrow Rust | 60.0.0 – before 60.1.059.0.0 – through 59.3.158.0.0 – through 58.4.033.0.0 – through 57.3.1 |
Weakness: CWE-125, CWE-20