Vulnerability DatabaseCVE-2026-32284
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CVE-2026-32284
Published:March 26, 2026
Updated:May 18, 2026
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.
Related Resources (7)
https://github.com/golang/vulndb/issues/4513
https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026
https://pkg.go.dev/vuln/GO-2026-4513
https://github.com/advisories/GHSA-h9q6-hc68-35rp
https://github.com/shamaton/msgpack
https://github.com/shamaton/msgpack/issues/59
https://nvd.nist.gov/vuln/detail/CVE-2026-32284
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Read
CWE-125
EPSS
Base Score:
0.06