CVE-2026-32288 — MEDIUM (5.5)

Q: What is CVE-2026-32288?

CVE-2026-32288 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

Q: How severe is CVE-2026-32288?

CVE-2026-32288 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-32288?

Check the references section above for vendor advisories and patch information. Affected products include: Golang Go.

Vulnerability 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 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Golang	Go	< 1.25.9

Related Weaknesses (CWE)

CWE-770

References

https://go.dev/cl/763766Patch
https://go.dev/issue/78301Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWURelease NotesMailing List
https://pkg.go.dev/vuln/GO-2026-4869Vendor Advisory

FAQ

What is CVE-2026-32288?

CVE-2026-32288 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

How severe is CVE-2026-32288?

CVE-2026-32288 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-32288?

Check the references section above for vendor advisories and patch information. Affected products include: Golang Go.