CVE-2026-32284

HIGH EPSS 32.3%
Published Mar 26, 20263mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 26, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
32.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
shamatonmsgpack* ≤3.1.2

References 4

  • github.com https://github.com/golang/vulndb/issues/4513
    Issue TrackingThird Party Advisory
  • github.com https://github.com/shamaton/msgpack/issues/59
    Issue TrackingVendor Advisory
  • pkg.go.dev https://pkg.go.dev/vuln/GO-2026-4513
    Third Party Advisory
  • securityinfinity.com https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.