CVE-2020-11016: IntelMQ Manager from version 1.1.0 and before version 2.1.1 has a vulnerability where the backend incorrectly

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CRITICAL 9.1UPGRADE

CVE-2020-11016 is a critical-severity flaw (CVSS 9.1) affecting intelmq manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IntelMQ Manager from version 1.1.0 and before version 2.1.1 has a vulnerability where the backend incorrectly handled messages given by user-input in the "send" functionality of the Inspect-tool of the Monitor component. An attacker with access to the IntelMQ Manager could possibly use this issue to execute arbitrary code with the privileges of the webserver. Version 2.1.1 fixes the vulnerability.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.3% (top 16%)
CISA exploited list	No
Weakness	CWE-78
Published	2020-04-30
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: intelmq manager project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-04-30 23:15 UTCPublished CVE record published
2026-06-17 02:48 UTCUpdated Record last modified

intelmq manager project intelmq manager UPGRADE

Affected: >= 1.1.0 and < 2.1.1

Fixed in: 2.1.1

Safe to downgrade to: a release before 1.1.0

1. Check installed version

apt-cache policy intelmq-manager || rpm -q intelmq-manager || intelmq-manager --version

2. UPGRADE to 2.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade intelmq-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade intelmq-manager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.1.0 (Debian / Ubuntu)

apt-cache madison intelmq-manager sudo apt install intelmq-manager=<VERSION_BEFORE_1.1.0> sudo apt-mark hold intelmq-manager

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list intelmq-manager sudo dnf downgrade intelmq-manager-<VERSION_BEFORE_1.1.0> sudo dnf versionlock add intelmq-manager

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-11016?

intelmq manager: upgrade to 2.1.1. Exact commands for each OS are on this page.

Is CVE-2020-11016 being exploited?

CVE-2020-11016 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-11016 affect?

CVE-2020-11016 affects intelmq manager. Severity is critical (CVSS 9.1). IntelMQ Manager from version 1.1.0 and before version 2.1.1 has a vulnerability where the backend incorrectly handled messages given by user-input in the "send" functionality of the Inspect-tool of the Monitor component. An attacker with ac

How urgent is CVE-2020-11016?

Priority 53/100. Critical severity

References

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