This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-90473 →

DEBIAN-CVE-2026-90473

msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large elem...

Original description

The description as published by the source.

msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large element counts. Attackers can supply a MAP32 element count at or above 0x40000000 that wraps when doubled, causing the parser cursor to desynchronize and attacker-controlled data to be returned in place of later fields.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 msgpack-java

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 msgpack-java

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 msgpack-java

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org