CVE-2026-32288

MEDIUM

Unbounded allocation for old GNU sparse in archive/tar

Title source: cna
STIX 2.1

Description

tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large number of sparse regions encoded in the "old GNU sparse map" format.

References (4)

Scores

CVSS v3 5.5
EPSS 0.0000
EPSS Percentile 0.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (3)
Go standard library/archive/tar < 1.25.9
Go standard library/archive/tar 1.26.0-0 - 1.26.2
golang/go < 1.25.9
Published Apr 08, 2026
Tracked Since Apr 08, 2026