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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-111959

Apache Arrow Rust: Improper validation of RunEndEncoded arrays allows out of bounds reads

No exploitation reported by the sources we read.

  • Published2026-11-02
  • Fixed in60.1.0 · 59.3.2 · 58.4.1 · 57.3.2
  • WeaknessCWE-125 · CWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0213:34CVE publishedCNA

Versions per branch

OSV
arrow-data
BranchAffectedFixed in
60.x≥ 60.0.0, < 60.1.060.1.0
59.x≥ 59.0.0, < 59.3.259.3.2
58.x≥ 58.0.0, < 58.4.158.4.1
57.3≥ 33.0.0, < 57.3.257.3.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As apache, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apache Software Foundation Apache Arrow Rustother versions: not affected

    package arrowhttps://crates.io

    Affected
    • ≥ 60.0.0, < 60.1.0fixed in 60.1.0semver
    • ≥ 59.0.0, ≤ 59.3.1no fix statedsemver
    • ≥ 58.0.0, ≤ 58.4.0no fix statedsemver
    • ≥ 33.0.0, ≤ 57.3.1no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-02

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-111959 Red Hat Product Security1 known affected

    arrow: arrow: Out-of-bounds read via improper validation of RunEndEncoded arrays

    openshift-logging/vector-rhel9 as a component of Logging Subsystem for Red Hat OpenShift

Full record on NVD

Fix

  1. Update arrow-data to 60.1.0 · 59.3.2 · 58.4.1 · 57.3.2
  2. No fix planned, says the vendor Red Hat Product Security CVE-2026-111959 · 1 productOut of support scope

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
2026-11-02
Last Modified
2026-11-06
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-gqmm-qrjq-4c7h

Frequently asked questions

What is CVE-2026-111959?

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.

Is CVE-2026-111959 actively exploited?

Active exploitation of CVE-2026-111959 has not been confirmed. Its EPSS score was 0.2% on 2026-11-05, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-111959?

CVE-2026-111959 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

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