VulnerabilityAnalyzed
CVE-2026-32288
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.
MEDIUM 5.5EPSS 0.29%
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.29% probability · 21th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- golang/go
- Source
- security@golang.org
References
- https://go.dev/cl/763766Patch
- https://go.dev/issue/78301Issue Tracking
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUMailing List, Release Notes
- https://pkg.go.dev/vuln/GO-2026-4869Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.