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CVE

CVE-2026-32288

tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large numb

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 · CVSS 5.5 EPSS 4e-05
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

2
golang go< 1.25.9
golang go>= 1.26.0 and < 1.26.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go stdlib fixed in 1.25.9, 1.26.2
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · security@golang.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Apr 2026 · 02:16 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

14
suse-csafopenSUSE-SU-2026:20703-1
suse-csafSUSE-SU-2026:1580-1
suse-csafSUSE-SU-2026:1581-1
rhsaRHSA-2026:7385Moderate
suse-csafopenSUSE-SU-2026:20570-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://go.dev/cl/763766Patch
https://go.dev/issue/78301Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUMailing ListRelease Notes
https://pkg.go.dev/vuln/GO-2026-4869Vendor Advisory
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