Apache Arrow C++, PyArrow: Parquet file-controlled KMS URL is forwarded to pluggable KmsClient that skips host validation
Pass-through of unvalidated KMS URLs to KMS clients in Apache C++ Parquet and PyArrow versions 4.0.0 to 25.0.1. This affects users who read Parquet files and configure Parquet decryption properties with a KmsClient implementation. On the reader side, the KMS URL can be application-controlled (specified in the KmsConnectionConfig) or file-controlled. If the user does not leverage application control for this parameter, a file-controlled KMS URL is forwarded to a pluggable KmsClient implementation. If the KMS implementation does not perform host validation and makes use of the provided KMS URL, a KMS token can be sent to a malicious host set by an attacker in the file. Users are recommended to upgrade to version 26.0.0, which disables this behavior by default and requires that users opt-in to it by enabling the read_kms_url flag in the DecryptionConfiguration. Users of affected versions are recommended to either specify the KMS URL in the KmsConnectionConfig when reading files, or ensure any KmsClient implementations validate received KMS URLs. Users that opt-in to file-controlled KMS URLs in version 26.0.0 and later must ensure KmsClients validate KMS URLs.
CVE-2026-92287
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-92287
Apache Arrow C++
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
PyArrow
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Apache Software Foundation",
"product": "Apache Arrow C++",
"versions": [
{
"status": "affected",
"version": "4.0.0",
"lessThan": "26.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "26.0.0",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Apache Software Foundation",
"product": "PyArrow",
"versions": [
{
"status": "affected",
"version": "8.0.0",
"lessThan": "26.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "26.0.0",
"versionType": "semver"
}
],
"packageURL": "pkg:pypi/pyarrow",
"packageName": "pyarrow",
"collectionURL": "https://pypi.python.org",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-92287
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #42136 · Revision 1
- Added to Heist Feed
- Publisher date