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Fencer Intel
high 7.5

CVE-2021-26118 json

Flaw in ActiveMQ Artemis OpenWire support

published 5y ago modified 4mo ago also GHSA-q7fr-vqhq-v5xr , EUVD-2021-1379

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

While investigating ARTEMIS-2964 it was found that the creation of advisory messages in the OpenWire protocol head of Apache ActiveMQ Artemis 2.15.0 bypassed policy based access control for the entire session. Production of advisory messages was not subject to access control in error.

Patch / fix

  • maven org.apache.activemq:artemis-openwire-protocol 2.16.0
  • Apache Software Foundation Apache ActiveMQ Artemis 2.16.0

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-26118 updated cvss 7.5

7: OpenWire can create destinations with an unpriviledged user

  • Red Hat AMQ Broker 7 broker
    affected: workaround, no fix available
  • Red Hat AMQ
    fixed: vendor fix RHSA-2020:5365
  • Red Hat AMQ 7.8.1
    fixed: vendor fix RHSA-2021:0417

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.86% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.activemq:artemis-openwire-protocol
<2.16.0
2.16.0

Affected products

  • Apache Software Foundation Apache ActiveMQ Artemis

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.