Messagepack
Vendor:
First CVE: Jan 2, 2026 · Active for under a year
1
Total CVEs
Bottom 1%
1.0
Avg CVEs / Year
Bottom 1%
7.5
Avg CVSS
Higher Avg CVSS than 50% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Messagepack over time
Volume of CVEsAvg CVSS Base Score
First CVE
Jan 2, 2026
6 months ago
Most Recent CVE
Jan 2, 2026
203 days ago
CVE Severity & Scoring
Messagepack1 CVEs
100%
All CVEs352,231 CVEs
45%
40%
11%
High
Attack Vector
Local0 (0.0%)
Network1 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low1 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None1 (100.0%)
Unknown0 (0.0%)
Required0 (0.0%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None1 (100.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (1 CVEs).
1 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-21452HIGH MessagePack for Java is a serializer implementation for Java. A denial-of-service vulnerability exists in versions prior to 0.9.11 when deserializing .msgpack files containing EXT3 | Jan 2, 2026 | 7.5 | 25 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (1 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (1 CVEs).
Media Mentions
Signals from CVEs in this product scope (1 CVEs).
Top CNAs Publishing CVEs For Messagepack
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 0.9.10 | 1 | 7.5 | 0.5% | 0 | 0 |