VulnerabilityPublished 20 Oct 2026Updated 28 Oct 2026

CVE-2026-92287: Apache arrow · Pass-through of unvalidated KMS URLs to KMS clients in Apache C++ Parquet and PyArrow

Affects apache-arrowSource GCVE Database

Authoritative record:CVE-2026-92287· High

Not known to be exploited : patch apache-arrow soon.

Data as of 29 Oct 2026, 01:27 UTC

Severity

High

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

Disclosed: evidence found.
CVE published 20 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Patches and advisories

security-tracker.debian.org/tracker/cve-2026-92287 (opens in a new tab)

Affected software

Product	Affected	Fixed in
Ubuntu 26.10apache-arrow`pkg:deb/ubuntu/apache-arrow?arch=source&distro=stonking`Other threats	Affected 23.0.1-9 – 25.0.0-2ubuntu1 4 affected builds	Fixed in–
Ubuntu 26.04 LTSapache-arrow`pkg:deb/ubuntu/apache-arrow?arch=source&distro=resolute`Other threats	Affected =23.0.1-6 =23.0.1-9	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade to Apache Arrow version 26.0.0 or later, which disables file-controlled KMS URLs by default and requires explicit opt-in. Alternatively, users of affected versions should specify the KMS URL explicitly in the KmsConnectionConfig when reading files or ensure that their KmsClient implementations perform strict validation of any received KMS URLs. If opting in to file-controlled KMS URLs in version 26.0.0 or later, users must ensure KmsClients validate the URLs to prevent token leakage.

Description

CVE-2026-92287 is a vulnerability in Apache Arrow's C++ Parquet and PyArrow libraries from versions 4.0.0 to 25.0.1. It involves the pass-through of unvalidated Key Management Service (KMS) URLs to KMS clients when reading Parquet files with decryption properties configured. If the KMS URL is file-controlled and the KMS client does not validate the URL, a KMS token could be sent to an attacker-controlled host. Version 26.0.0 addresses this by disabling this behavior by default and requiring explicit opt-in via a configuration flag.

References

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