Checkmk CVEs.
Published CVEs affecting Checkmk, ranked by exploit odds.
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CVE-2017-14955
Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.
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CVE-2021-40904
The web management console of CheckMK Raw Edition (versions 1.5.0 to 1.6.0) allows a misconfiguration of the web-app Dokuwiki (installed by default), which allows embedded php code. As a result, remote code execution is achieved. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session by a user with the role of administrator.
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CVE-2021-40905
The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner.
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CVE-2021-36563
The CheckMK management web console (versions 1.5.0 to 2.0.0) does not sanitise user input in various parameters of the WATO module. This allows an attacker to open a backdoor on the device with HTML content and interpreted by the browser (such as JavaScript or other client-side scripts), the XSS payload will be triggered when the user accesses some specific sections of the application. In the same sense a very dangerous potential way would be when an attacker who has the monitor role (not administrator) manages to get a stored XSS to steal the secretAutomation (for the use of the API in administrator mode) and thus be able to create another administrator user who has high privileges on the CheckMK monitoring web console. Another way is that persistent XSS allows an attacker to modify the displayed content or change the victim's information. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session.
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CVE-2022-46836
PHP code injection in watolib auth.php and hosttags.php in Tribe29's Checkmk <= 2.1.0p10, Checkmk <= 2.0.0p27, and Checkmk <= 1.6.0p29 allows an attacker to inject and execute PHP code which will be executed upon request of the vulnerable component.
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CVE-2023-31209
Improper neutralization of active check command arguments in Checkmk < 2.1.0p32, < 2.0.0p38, < 2.2.0p4 leads to arbitrary command execution for authenticated users.
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CVE-2020-28919
A stored cross site scripting (XSS) vulnerability in Checkmk 1.6.0x prior to 1.6.0p19 allows an authenticated remote attacker to inject arbitrary JavaScript via a javascript: URL in a view title.
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CVE-2022-46303
Command injection in SMS notifications in Tribe29 Checkmk <= 2.1.0p10, Checkmk <= 2.0.0p27, and Checkmk <= 1.6.0p29 allows an attacker with User Management permissions, as well as LDAP administrators in certain scenarios, to perform arbitrary commands within the context of the application's local permissions.
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CVE-2021-40906
CheckMK Raw Edition software (versions 1.5.0 to 1.6.0) does not sanitise the input of a web service parameter that is in an unauthenticated zone. This Reflected XSS allows an attacker to open a backdoor on the device with HTML content and interpreted by the browser (such as JavaScript or other client-side scripts) or to steal the session cookies of a user who has previously authenticated via a man in the middle. Successful exploitation requires access to the web service resource without authentication.
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CVE-2023-31208
Improper neutralization of livestatus command delimiters in the RestAPI in Checkmk < 2.0.0p36, < 2.1.0p28, and < 2.2.0b8 (beta) allows arbitrary livestatus command execution for authorized users.
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CVE-2023-0284
Improper Input Validation of LDAP user IDs in Tribe29 Checkmk allows attackers that can control LDAP user IDs to manipulate files on the server. Checkmk <= 2.1.0p19, Checkmk <= 2.0.0p32, and all versions of Checkmk 1.6.0 (EOL) are affected.
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CVE-2023-1768
Inappropriate error handling in Tribe29 Checkmk <= 2.1.0p25, <= 2.0.0p34, <= 2.2.0b3 (beta), and all versions of Checkmk 1.6.0 causes the symmetric encryption of agent data to fail silently and transmit the data in plaintext in certain configurations.
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CVE-2023-6157
Improper neutralization of livestatus command delimiters in ajax_search in Checkmk <= 2.0.0p39, < 2.1.0p37, and < 2.2.0p15 allows arbitrary livestatus command execution for authorized users.
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CVE-2024-38865
Improper neutralization of livestatus command delimiters in a specific endpoint within RestAPI of Checkmk prior to 2.2.0p39, 2.3.0p25, and 2.1.0p51 (EOL) allows arbitrary livestatus command execution. Exploitation requires the attacker to have a contact group assigned to their user account and for an event to originate from a host with the same contact group or from an event generated with an unknown host.
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CVE-2023-6156
Improper neutralization of livestatus command delimiters in the availability timeline in Checkmk <= 2.0.0p39, < 2.1.0p37, and < 2.2.0p15 allows arbitrary livestatus command execution for authorized users.
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CVE-2025-1712
Argument injection in special agent configuration in Checkmk <2.4.0p1, <2.3.0p32, <2.2.0p42 and 2.1.0 allows authenticated attackers to write arbitrary files
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CVE-2025-39664
Insufficient escaping in the report scheduler within Checkmk <2.4.0p13, <2.3.0p38, <2.2.0p46 and 2.1.0 (EOL) allows authenticated attackers to define the storage location of report file pairs beyond their intended root directory.
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CVE-2022-24564
Checkmk <=2.0.0p19 contains a Cross Site Scripting (XSS) vulnerability. While creating or editing a user attribute, the Help Text is subject to HTML injection, which can be triggered for editing a user.
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CVE-2023-23549
Improper Input Validation in Checkmk <2.2.0p15, <2.1.0p37, <=2.0.0p39 allows priviledged attackers to cause partial denial of service of the UI via too long hostnames.
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CVE-2025-39663
Cross-Site Scripting (XSS) vulnerability in Checkmk's distributed monitoring allows a compromised remote site to inject malicious HTML code into service outputs in the central site. Affecting Checkmk before 2.4.0p14, 2.3.0p39, 2.2.0 and 2.1.0 (eol).
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CVE-2023-22348
Improper Authorization in RestAPI in Checkmk GmbH's Checkmk versions <2.1.0p28 and <2.2.0b8 allows remote authenticated users to read arbitrary host_configs.
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CVE-2022-24565
Checkmk <=2.0.0p19 Fixed in 2.0.0p20 and Checkmk <=1.6.0p27 Fixed in 1.6.0p28 are affected by a Cross Site Scripting (XSS) vulnerability. The Alias of a site was not properly escaped when shown as condition for notifications.
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CVE-2022-24566
In Checkmk <=2.0.0p19 fixed in 2.0.0p20 and Checkmk <=1.6.0p27 fixed in 1.6.0p28, the title of a Predefined condition is not properly escaped when shown as condition, which can result in Cross Site Scripting (XSS).
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CVE-2023-31210
Usage of user controlled LD_LIBRARY_PATH in agent in Checkmk 2.2.0p10 up to 2.2.0p16 allows malicious Checkmk site user to escalate rights via injection of malicious libraries
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CVE-2024-6163
Certain http endpoints of Checkmk in Checkmk < 2.3.0p10 < 2.2.0p31, < 2.1.0p46, <= 2.0.0p39 allows remote attacker to bypass authentication and access data
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CVE-2024-28825
Improper restriction of excessive authentication attempts on some authentication methods in Checkmk before 2.3.0b5 (beta), 2.2.0p26, 2.1.0p43, and in Checkmk 2.0.0 (EOL) facilitates password brute-forcing.
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CVE-2022-4884
Path-Traversal in MKP storing in Tribe29 Checkmk <=2.0.0p32 and <= 2.1.0p18 allows an administrator to write mkp files to arbitrary locations via a malicious mkp file.
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CVE-2023-31211
Insufficient authentication flow in Checkmk before 2.2.0p18, 2.1.0p38 and 2.0.0p39 allows attacker to use locked credentials
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CVE-2023-22359
User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.
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CVE-2022-48318
No authorisation controls in the RestAPI documentation for Tribe29's Checkmk <= 2.1.0p13 and Checkmk <= 2.0.0p29 which may lead to unintended information disclosure through automatically generated user specific tags within Rest API documentation.
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CVE-2024-28826
Improper restriction of local upload and download paths in check_sftp in Checkmk before 2.3.0p4, 2.2.0p27, 2.1.0p44, and in Checkmk 2.0.0 (EOL) allows attackers with sufficient permissions to configure the check to read and write local files on the Checkmk site server.
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CVE-2024-6542
Improper neutralization of livestatus command delimiters in mknotifyd in Checkmk <= 2.0.0p39, < 2.1.0p47, < 2.2.0p32 and < 2.3.0p11 allows arbitrary livestatus command execution.
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CVE-2024-8606
Bypass of two factor authentication in RestAPI in Checkmk < 2.3.0p16 and < 2.2.0p34 allows authenticated users to bypass two factor authentication
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CVE-2022-48317
Expired sessions were not securely terminated in the RestAPI for Tribe29's Checkmk <= 2.1.0p10 and Checkmk <= 2.0.0p28 allowing an attacker to use expired session tokens when communicating with the RestAPI.
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CVE-2024-38859
XSS in the view page with the SLA column configured in Checkmk versions prior to 2.3.0p14, 2.2.0p33, 2.1.0p47 and 2.0.0 (EOL) allowed malicious users to execute arbitrary scripts by injecting HTML elements into the SLA column title. These scripts could be executed when the view page was cloned by other users.
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CVE-2024-38863
Exposure of CSRF tokens in query parameters on specific requests in Checkmk GmbH's Checkmk versions <2.3.0p18, <2.2.0p35 and <2.1.0p48 could lead to a leak of the token to facilitate targeted phishing attacks.
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CVE-2023-23548
Reflected XSS in business intelligence in Checkmk <2.2.0p8, <2.1.0p32, <2.0.0p38, <=1.6.0p30.
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CVE-2023-2020
Insufficient permission checks in the REST API in Tribe29 Checkmk <= 2.1.0p27 and <= 2.2.0b4 (beta) allow unauthorized users to schedule downtimes for any host.
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CVE-2022-31258
In Checkmk before 1.6.0p29, 2.x before 2.0.0p25, and 2.1.x before 2.1.0b10, a site user can escalate to root by editing an OMD hook symlink.
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CVE-2025-32918
Improper neutralization of Livestatus command delimiters in autocomplete endpoint within the RestAPI of Checkmk versions <2.4.0p6, <2.3.0p35, <2.2.0p44, and 2.1.0 (EOL) allows an authenticated user to inject arbitrary Livestatus commands.
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CVE-2023-22288
HTML Email Injection in Tribe29 Checkmk <=2.1.0p23; <=2.0.0p34, and all versions of Checkmk 1.6.0 allows an authenticated attacker to inject malicious HTML into Emails
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CVE-2024-28833
Improper restriction of excessive authentication attempts with two factor authentication methods in Checkmk 2.3 before 2.3.0p6 facilitates brute-forcing of second factor mechanisms.
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CVE-2024-6052
Stored XSS in Checkmk before versions 2.3.0p8, 2.2.0p29, 2.1.0p45, and 2.0.0 (EOL) allows users to execute arbitrary scripts by injecting HTML elements
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CVE-2022-47909
Livestatus Query Language (LQL) injection in the AuthUser HTTP query header of Tribe29's Checkmk <= 2.1.0p11, Checkmk <= 2.0.0p28, and all versions of Checkmk 1.6.0 (EOL) allows an attacker to perform direct queries to the application's core from localhost.
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CVE-2022-46302
Broad access controls could allow site users to directly interact with the system Apache installation when providing the reverse proxy configurations for Tribe29's Checkmk <= 2.1.0p6, Checkmk <= 2.0.0p27, and all versions of Checkmk 1.6.0 (EOL) allowing an attacker to perform remote code execution with root privileges on the underlying host.
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CVE-2024-6747
Information leakage in mknotifyd in Checkmk before 2.3.0p18, 2.2.0p36, 2.1.0p49 and in 2.0.0p39 (EOL) allows attacker to get potentially sensitive data
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CVE-2025-64998
Exposure of session signing secret in Checkmk <2.4.0p23, <2.3.0p45 and 2.2.0 allows an administrator of a remote site with config sync enabled to hijack sessions on the central site by forging session cookies.
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CVE-2024-2380
Stored XSS in graph rendering in Checkmk <2.3.0b4.
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CVE-2024-28831
Stored XSS in some confirmation pop-ups in Checkmk before versions 2.3.0p7 and 2.2.0p28 allows Checkmk users to execute arbitrary scripts by injecting HTML elements into some user input fields that are shown in a confirmation pop-up.
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CVE-2024-6572
Improper host key checking in active check 'Check SFTP Service' and special agent 'VNX quotas and filesystem' in Checkmk before Checkmk 2.3.0p15, 2.2.0p33, 2.1.0p48 and 2.0.0 (EOL) allows man-in-the-middle attackers to intercept traffic
All CVEs affecting Checkmk that appear in CVE.org and NVD, sorted by how likely they are to be exploited (EPSS), with fix status and timeline.