CVE-2026-21452
HighAdvisory
Published 5 Jan 2026In the index since 6 Sept 2026
- Severity
- High
- worst across findings
- CVSS
- 7.5
- base score, highest
- EPSS
- 0.006
- 47th percentile
- CISA KEV
- Not listed
- no confirmed exploitation
- Charts affected
- 8
- of 17,781 indexed, latest versions
- Container images
- 7
- deployed by those charts
- Fix available
- 1 of 1
- affected package
MessagePack for Java Vulnerable to Remote DoS via Malicious EXT Payload Allocation
Carried by container images the latest versions of 8 of 17,781 indexed charts deploy, on 7 images.
| Affected package | Affected versions | Fixed in | Images |
|---|---|---|---|
| msgpack-coremaven | 0.8.16, 0.8.21, 0.8.24, 0.9.0+2 more | 0.9.11 | 7 |
- OSV records
- GHSA-cw39-r4h6-8j3x
Charts affected
8 by stars
| Chart | Latest | Affected images | Radar Score |
|---|---|---|---|
| hertzbeathertzbeatOfficialVerified publisher | 1.8.1 | 1 of 4See more | 14,000 |
| skywalkingkubesphere-testVerified publisher | 3.1.0 | 1 of 4See more | 18,042 |
| kafdroplsst-sqre | 0.1.3 | 1 of 1See more | 7,901 |
| pitchforkexpediagroup | 0.1.4 | 1 of 1See more | 3,309 |
| hertzbeatkubesphere-testVerified publisher | 1.4.1 | 1 of 4See more | 7,710 |
| amorphieamorphie | 0.1.2 | 1 of 18See more | 28,131 |
| firehoseblip-firehoseVerified publisher | 0.0.18 | 1 of 11See more | 13,459 |
| skywalking-v1huangchengwu-helm-chart | 0.1.0 | 1 of 4See more | 20,650 |
Container images carrying it
7 by charts deploying them
A fixed version is listed for 1 of the 1 affected package.
| Container image | Digest | Package | Fixed in | Used by |
|---|---|---|---|---|
| obsidiandynamics/ | 5337c9e0e2de | msgpack-core | 0.9.11 | 2 |
| apache/ | 75d48a62748f | msgpack-core | 0.9.11 | 1 |
| apache/ | afa47bf1692a | msgpack-core | 0.9.11 | 1 |
| apache/ | 641237e0299b | msgpack-core | 0.9.11 | 1 |
| apache/ | b4ec8c18d079 | msgpack-core | 0.9.11 | 1 |
| camunda/ | ab5abc09e407 | msgpack-core | 0.9.11 | 1 |
| expediagroup/ | 4f2cf61e7de9 | msgpack-core | 0.9.11 | 1 |