CVE catalog
CVE-2026-49432
Improper 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-s
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.78% · Oct 25, 2026
Improper 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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | activemq | sid | 5.17.6+dfsg-2 | vulnerable |
| Debian | activemq | trixie | 5.17.6+dfsg-2 | vulnerable |
| Debian | activemq | bookworm | 5.17.2+dfsg-2+deb12u1 | vulnerable |
| Debian | activemq | bookworm-security | 5.17.2+dfsg-2+deb12u1 | vulnerable |
| Cpe | activemq | Not reported | Not reported | vulnerable |
| Cpe | activemq | Not reported | 5.19.8 | fixed |
| Cpe | activemq | Not reported | 6.2.7 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | activemq | source | sid | (unfixed) | not yet assigned | Not reported | [1141385] |
| Debian | activemq | source | trixie | (unfixed) | not yet assigned | Not reported | [1141385] |
| Debian | activemq | source | bookworm | (unfixed) | not yet assigned | Not reported | [1141385] |
| Cpe | activemq | cpe | Not reported | 5.19.8 | Not reported | Not reported | Not reported |
| Cpe | activemq | cpe | Not reported | 6.2.7 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [activemq]Affected
Details (4)
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
- [libactivemq-java]Affected
Source package: [activemq]
Details (4)
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
[Debian 13 (Trixie)]
- [activemq]Affected
Details (2)
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
- [libactivemq-java]Affected
Source package: [activemq]
Details (2)
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-49432]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-49432]
- [https://security-tracker.debian.org/tracker/CVE-2026-49432]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49432.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3043.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]