CVE-2026-49432

NameCVE-2026-49432
DescriptionImproper Input Validation vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp. A remote unauthenticated peer that can reach an exposed STOMP connector can trigger denial-of-service behavior by sending a negative content-length. For the NIO STOMP transport, an attacker can keep streaming body bytes and grow the per-connection command buffer beyond configured limits to cause OOM. For the blocking STOMP protocol, an error will instead force abnormal transport exception handling for the affected connection and closure. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Stomp: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1141385

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
activemq (PTS)bullseye5.16.1-1vulnerable
bullseye (security)5.16.1-1+deb11u2vulnerable
bookworm, bookworm (security)5.17.2+dfsg-2+deb12u1vulnerable
sid, trixie5.17.6+dfsg-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
activemqsource(unstable)(unfixed)1141385

Notes

https://lists.apache.org/thread/fsjb26605syqr8xks249h8gkp86t55d2

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