CVE-2026-32288medium

CVE-2026-32288: medium-severity vulnerability in Go standard library archive/tar

Unbounded allocation for old GNU sparse in archive/tar

Published · Updated

Follow this CVE+ Monitor archive/tar+ Monitor go

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.5epss 0.3%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected products
Go standard library · archive/tar
Related CVEs — Go standard library archive/tar

In the same product, most dangerous first.

CVE-2022-2879—Unbounded memory consumption when reading headers in archive/tarEPSS 2.0%CVE-2025-58183MEDIUMUnbounded allocation when parsing GNU sparse map in archive/tarEPSS 0.4%