# org.msgpack:msgpack-core (Maven) vulnerabilities

1 known vulnerability (1 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 0.9.12 (May 3, 2026): no advisory affects it
- Newest unaffected release: 0.9.12 (May 3, 2026), the latest release
- Dependents: 189
- Releases: 55 since 0.7.0 (Nov 2, 2015)
- Registry: https://central.sonatype.com/artifact/org.msgpack/msgpack-core
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-21452: 0.7.0-M1 to 0.9.10 (0.9.11 is outside it)

## Advisories (1)

### [CVE-2026-21452](https://cve.now/CVE-2026-21452): MessagePack-Java Vulnerable to Remote Denial of Service via Malicious .msgpack Model File Triggering Unbounded EXT Payload Allocation

- Severity: High 7.5
- Published: Jan 2, 2026
- Affected: fixed in 0.9.11.
- Fixed in 0.9.11 (released Jan 2, 2026, the day of disclosure).
- The latest release, 0.9.12, is not affected.

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