CVE-2026-32288

Unbounded allocation for old GNU sparse in archive/tar

Medium · published April 8, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
7.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00182 · 7.4th percentile
Published
2026-04-08T01:06Z
EPSS history
Timeline
  • 08 APR 01:06Z
    Unbounded allocation for old GNU sparse in archive/tar
    cvelistv5