{"id":"CVE-2026-32288","sourceIdentifier":"security@golang.org","published":"2026-04-08T02:16:03.707","lastModified":"2026-07-25T10:10:00.167","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"tar.Reader puede asignar una cantidad ilimitada de memoria al leer un archivo creado maliciosamente que contiene un gran número de regiones dispersas codificadas en el formato 'old GNU sparse map'."}],"affected":[{"source":"security@golang.org","affectedData":[{"vendor":"Go standard library","product":"archive/tar","defaultStatus":"unaffected","collectionURL":"https://pkg.go.dev","packageName":"archive/tar","programRoutines":[{"name":"Reader.readOldGNUSparseMap"},{"name":"readGNUSparseMap1x0"},{"name":"Reader.Next"}],"versions":[{"version":"0","lessThan":"1.25.9","versionType":"semver","status":"affected"},{"version":"1.26.0-0","lessThan":"1.26.2","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-13T17:51:05.649111Z","id":"CVE-2026-32288","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-770"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*","versionEndExcluding":"1.25.9","matchCriteriaId":"C6C9C072-9817-402D-877F-F83584B07017"},{"vulnerable":true,"criteria":"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*","versionStartIncluding":"1.26.0","versionEndExcluding":"1.26.2","matchCriteriaId":"39FE9BAF-55E9-43AA-B14E-239E7EF1D65D"}]}]}],"references":[{"url":"https://go.dev/cl/763766","source":"security@golang.org","tags":["Patch"]},{"url":"https://go.dev/issue/78301","source":"security@golang.org","tags":["Issue Tracking"]},{"url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU","source":"security@golang.org","tags":["Mailing List","Release Notes"]},{"url":"https://pkg.go.dev/vuln/GO-2026-4869","source":"security@golang.org","tags":["Vendor Advisory"]}]}