{"id":"CVE-2026-32288","title":"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.","summary":"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.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"golang","product":"go","affected":["go < 1.25.9","go >= 1.26.0, < 1.26.2"],"patched":["go 1.26.2"],"published":"2026-04-08","updated":"2026-07-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-32288","references":[{"url":"https://go.dev/cl/763766","label":"security@golang.org"},{"url":"https://go.dev/issue/78301","label":"security@golang.org"},{"url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU","label":"security@golang.org"},{"url":"https://pkg.go.dev/vuln/GO-2026-4869","label":"security@golang.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32288.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-32288"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456332"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-32288"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32288"},{"url":"https://access.redhat.com/errata/RHSA-2026:7385"},{"url":"https://access.redhat.com/errata/RHSA-2026:7291"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.0029,"epssPercentile":0.21832,"ingestedAt":"2026-07-25T23:05:58.570Z","scores":{"nvd":5.5,"vendor":4.3},"slug":"CVE-2026-32288","body":"## Overview\n\ntar.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.\n\n## Affected\n\n- `go < 1.25.9`\n- `go >= 1.26.0, < 1.26.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `go 1.26.2`\n\n## Vendor advisories\n\n- **RHSA-2026:7385** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-04-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:7385)\n- **RHSA-2026:7291** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-04-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:7291)\n- **Red Hat VEX** · Moderate · affected: Assisted Installer for Red Hat OpenShift Container Platform 2, Builds for Red Hat OpenShift, cert-manager Operator for Red Hat OpenShift, Confidential Compute Attestation, Cryostat 4, Custom Metric Autoscaler operator for Red Hat Openshift, … · no fix planned: Red Hat Enterprise Linux 9, Assisted Installer for Red Hat OpenShift Container Platform 2, Builds for Red Hat OpenShift, cert-manager Operator for Red Hat OpenShift, … · updated 2026-09-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32288.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}