CVE-2026-32288

medium

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

https://pkg.go.dev/vuln/GO-2026-4869

https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU

https://go.dev/issue/78301

https://go.dev/cl/763766

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-20016

Details

Source: Mitre, NVD

Published: 2026-04-08

Updated: 2026-07-25

Named Vulnerability: GO-2026-4869Named Vulnerability: GHSA-x4jj-h2v8-hqqv

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H