PT-2026-20319 · Apache · Apache Arrow

Antoine Pitrou + 3 · Published 2026-02-17 · Updated 2026-02-22 · CVE-2026-25087

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

Name of the Vulnerable Software and Affected Versions Apache Arrow C++ versions 15.0.0 through 23.0.0

Description A use-after-free issue exists in Apache Arrow C++ when reading an Arrow IPC file with pre-buffering enabled, if the file contains data with variadic buffers like Binary View and String View data. This can lead to a write to a dangling pointer, potentially causing random crashes or memory corruption. If the application ingests IPC files from untrusted sources, this could be exploited for denial of service. The pre-buffering feature is disabled by default but can be enabled using the RecordBatchFileReader::PreBufferMetadata API call. Language bindings like Python, Ruby, and C GLib are not vulnerable as the functionality is not exposed through them.

Recommendations For versions 15.0.0 through 23.0.0, check if pre-buffering is enabled on the IPC file reader using RecordBatchFileReader::PreBufferMetadata. If it is enabled, either disable pre-buffering or upgrade to version 23.0.1.

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

AZL-78129

CVE-2026-25087

PYSEC-2026-113

Affected Products

Apache Arrow

References · 16

• https://github.com/apache/arrow/pull/48925 · Patch
• https://osv.dev/vulnerability/CVE-2026-25087 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-113 · Vendor Advisory
• https://lists.apache.org/thread/mpm4ld1qony30tchfpjtk5b11tcyvmwh · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-25087 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-25087 · Security Note
• https://osv.dev/vulnerability/AZL-78129 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-25087 · Vendor Advisory
• https://twitter.com/UndercodeUpdate/status/2025145666998059349 · Twitter Post
• https://twitter.com/CVEnew/status/2023760673378021637 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2023769884627181683 · Twitter Post
• https://twitter.com/r00tk1dX/status/2024982501299560793 · Twitter Post
• https://twitter.com/cracbot/status/2025526030170280444 · Twitter Post
• https://t.me/CVEtracker/44873 · Telegram Post
• https://twitter.com/oss_security/status/2023964965061689453 · Twitter Post