CVE-2026-32288 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Go Standard Library	Archive/tar

No data.

No data.

References

Link	Providers
https://go.dev/cl/763766
https://go.dev/issue/78301
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
https://nvd.nist.gov/vuln/detail/CVE-2026-32288
https://pkg.go.dev/vuln/GO-2026-4869
https://www.cve.org/CVERecord?id=CVE-2026-32288

History

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		https://nvd.nist.gov/vuln/detail/CVE-2026-32288 https://www.cve.org/CVERecord?id=CVE-2026-32288
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		https://go.dev/cl/763766 https://go.dev/issue/78301 https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU https://pkg.go.dev/vuln/GO-2026-4869

MITRE

Status: PUBLISHED

Assigner: Go

Published: 2026-04-08T01:06:57.416Z

Updated: 2026-04-08T01:06:57.416Z

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

Link: CVE-2026-32288

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

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

Modified: 2026-04-08T21:26:35.910

Link: CVE-2026-32288

Redhat

Severity : Moderate

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

Links: CVE-2026-32288 - Bugzilla

{"bugzilla": {"description": "archive/tar: golang: Go's archive/tar package: Denial of Service via maliciously-crafted archive", "id": "2456332", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456332"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Go's `archive/tar` package. A remote attacker could exploit this vulnerability by providing a maliciously-crafted archive file. When the `tar.Reader` processes an archive containing a large number of sparse regions in the \"old GNU sparse map\" format, it can lead to unbounded memory allocation. This can result in a Denial of Service (DoS) condition, making the affected application unresponsive."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-32288", "package_state": [{"cpe": "cpe:/a:redhat:assisted_installer:2", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/assisted-installer-ds-main", "product_name": "Assisted Installer for Red Hat OpenShift Container Platform 2"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/openshift-builds-waiter-1-6", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/openshift-builds-waiter-1-7", 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"product_name": "Red Hat Trusted Artifact Signer"}, {"cpe": "cpe:/a:redhat:openshift_security_profiles_operator:1", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/security-profiles-operator-release", "product_name": "Security Profiles Operator"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:1", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/spiffe-spire-agent-1-13-3", "product_name": "Zero Trust Workload Identity Manager"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Fix deferred", "package_name": "redhat-user-workloads/spiffe-spire-agent-1-12-4", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}], "public_date": "2026-04-08T01:06:57Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-32288\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-32288\nhttps://go.dev/cl/763766\nhttps://go.dev/issue/78301\nhttps://groups.google.com/g/golang-announce/c/0uYbvbPZRWU\nhttps://pkg.go.dev/vuln/GO-2026-4869"], "threat_severity": "Moderate"}