CVE-2022-47909Public exploit

Arbitrary core commands via newline header injection

Published Feb 20, 2023 · Updated Aug 3, 2024

LQL injection in Checkmk 1.6.0 through 1.6.0p30, 2.0.0 through 2.0.0p28, and 2.1.0 through 2.1.0p11 allows local users to run core commands. The Livestatus wrapper copies the force_authuser parameter into the AuthUser query header without rejecting newlines, enabling additional headers and queries. The endpoint accepts unauthenticated requests only from localhost; injected external commands can alter core state or delete files.

CVSS severity6.8
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

LQL injection in Checkmk 1.6.0 through 1.6.0p30, 2.0.0 through 2.0.0p28, and 2.1.0 through 2.1.0p11 allows local users to run core commands. The Livestatus wrapper copies the force_authuser parameter into the AuthUser query header without rejecting newlines, enabling additional headers and queries. The endpoint accepts unauthenticated requests only from localhost; injected external commands can alter core state or delete files.

The record

CVE
CVE-2022-47909
Published
Feb 20, 2023
Updated
Aug 3, 2024
Vendor
Checkmk GmbH
Product
Checkmk
Classifications
CWE-20, T1190
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.6.0 <=1.6.0p30
  2. Affected versionversion=2.0.0 <=2.0.0p28
  3. Affected versionversion=2.1.0 <=2.1.0p11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Checkmk GmbH · Checkmkversion=1.6.0 <=1.6.0p30; version=2.0.0 <=2.0.0p28; version=2.1.0 <=2.1.0p11

Published CVSS scores

6.8Checkmk GmbHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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