CVE-2026-32288

MEDIUMNVD 5.55.5—

5.5

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 v3: 5.5
EG Score: 5.5(medium)
EPSS: 0.2%
KEV: Not listed

Published

April 8, 2026

Last Modified

April 16, 2026

References (4)

security@golanghttps://go.dev/cl/763766
security@golanghttps://go.dev/issue/78301
security@golanghttps://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
security@golanghttps://pkg.go.dev/vuln/GO-2026-4869

Vendor Advisories for CVE-2026-32288(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	golang1-25-main-1.25.9-1.hum1	2026-04-10	redhat
redhat	golang1-26-main-1.26.2-1.hum1	2026-04-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Go(1)

Package	Vulnerable range	Fixed in	Dependents
stdlib	—	1.26.2	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-770Allocation of Resources Without Limits or Throttling

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:13 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-20 18:33 UTCEG score recompute
2026-05-20 18:33 UTCVendor advisory
2026-05-20 18:33 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-32288?

CVE-2026-32288 is a medium vulnerability published on April 8, 2026. 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.

When was CVE-2026-32288 disclosed?

CVE-2026-32288 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-32288 actively exploited?

CVE-2026-32288 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-32288?

CVE-2026-32288 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-32288?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-32288, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-32288

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