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.
Published: 2026-04-08
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unbounded memory allocation when parsing tar archives using the old GNU sparse map format.
Action: Update
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Remediation

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History

Thu, 16 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Golang
Golang go
CPEs cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
Vendors & Products Golang
Golang go

Mon, 13 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}


Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Go Standard Library
Go Standard Library archive/tar
Weaknesses CWE-789
Vendors & Products Go Standard Library
Go Standard Library archive/tar

Thu, 09 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

threat_severity

Moderate


Wed, 08 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-789

Wed, 08 Apr 2026 01:45:00 +0000

Type Values Removed Values Added
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.
Title Unbounded allocation for old GNU sparse in archive/tar
References

Subscriptions

Go Standard Library Archive/tar
Golang Go
cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published:

Updated: 2026-04-13T18:20:08.191Z

Reserved: 2026-03-11T16:38:46.557Z

Link: CVE-2026-32288

cve-icon Vulnrichment

Updated: 2026-04-13T17:51:02.647Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-08T02:16:03.707

Modified: 2026-04-16T19:08:52.240

Link: CVE-2026-32288

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-08T01:06:57Z

Links: CVE-2026-32288 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-14T16:40:16Z

Weaknesses