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CVE-2026-32288

Unbounded allocation for old GNU sparse in archive/tar

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 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Go Standard Library Golang
Products
Archive/tar Go
CVE-2025-58183

Unbounded allocation when parsing GNU sparse map in archive/tar

tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input can result in large allocations.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Golang
Products
Archive
CVE-2025-61728

Excessive CPU consumption when building archive index in archive/zip

archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Go Standard Library Golang
Products
Archive/zip Go