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HIGH

CVE-2019-11287

CVSS v3

7.5

HIGH

EPSS Score

4.4 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2019-11287 Red Hat Product Security3 products fixed · 4 known affected

    rabbitmq-server: "X-Reason" HTTP Header can be leveraged to insert a malicious string leading to DoS

    rabbitmq-server as a component of Red Hat OpenStack Platform 10 (Newton) · rabbitmq-server as a component of Red Hat OpenStack Platform 14 (Rocky) · rabbitmq-server as a component of Red Hat OpenStack Platform 16 (Train)

  • RHSA-2020:0078 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: rabbitmq-server security update

Full record on NVD

Description

Pivotal RabbitMQ, versions 3.7.x prior to 3.7.21 and 3.8.x prior to 3.8.1, and RabbitMQ for Pivotal Platform, 1.16.x versions prior to 1.16.7 and 1.17.x versions prior to 1.17.4, contain a web management plugin that is vulnerable to a denial of service attack. The "X-Reason" HTTP Header can be leveraged to insert a malicious Erlang format string that will expand and consume the heap, resulting in the server crashing.

Technical details

Published
2019-11-23

Frequently asked questions

What is CVE-2019-11287?

Pivotal RabbitMQ, versions 3.7.x prior to 3.7.21 and 3.8.x prior to 3.8.1, and RabbitMQ for Pivotal Platform, 1.16.x versions prior to 1.16.7 and 1.17.x versions prior to 1.17.4, contain a web management plugin that is vulnerable to a denial of service attack. The "X-Reason" HTTP Header can be leveraged to insert a malicious Erlang format string that will expand and consume the heap, resulting in the server crashing.

Is CVE-2019-11287 actively exploited?

Active exploitation of CVE-2019-11287 has not been confirmed. Its EPSS score was 4.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-11287?

CVE-2019-11287 has a CVSS v3 base score of 7.5 (HIGH severity).

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