CVE-2026-33457 | Checkmk up to 2.3.0p46/2.4.0p25/2.5.0b3 Livestatus Command service name delimiter

VDB-356806 · CVE-2026-33457 · WID-SEC-2026-1050 CHECKMK UP TO 2.3.0P46/2.4.0P25/2.5.0B3 LIVESTATUS COMMAND SERVICE NAME DELIMITER HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 1.88 Summaryinfo A vulnerability, which was classified as critical, was found in Checkmk up to 2.3.0p46/2.4.0p25/2.5.0b3. Affected is an unknown function of the component Livestatus Command Handler. Executing a manipulation of the argument service name can lead to delimiter. This vulnerability is handled as CVE-2026-33457. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component. Detailsinfo A vulnerability classified as critical was found in Checkmk up to 2.3.0p46/2.4.0p25/2.5.0b3. This vulnerability affects some unknown functionality of the component Livestatus Command Handler. The manipulation of the argument service name with an unknown input leads to a delimiter vulnerability. The CWE definition for the vulnerability is CWE-140. The product does not neutralize or incorrectly neutralizes delimiters. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: Livestatus injection in the prediction graph page in Checkmk <2.5.0b4, <2.4.0p26, and <2.3.0p47 allows an authenticated user to inject arbitrary Livestatus commands via a crafted service name parameter due to insufficient sanitization of the service description value. The advisory is available at checkmk.com. This vulnerability was named CVE-2026-33457 since 03/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. Upgrading to version 2.3.0p47, 2.4.0p26 or 2.5.0b4 eliminates this vulnerability. The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1050). Affected Checkmk Checkmk Productinfo Name Checkmk Version 2.3.0p46 2.4.0p25 2.5.0b3 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Delimiter CWE: CWE-140 / CWE-20 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Checkmk 2.3.0p47/2.4.0p26/2.5.0b4 Timelineinfo 03/20/2026 CVE reserved 04/10/2026 +20 days Advisory disclosed 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Advisory: checkmk.com Status: Confirmed CVE: CVE-2026-33457 (🔒) GCVE (CVE): GCVE-0-2026-33457 GCVE (VulDB): GCVE-100-356806 CERT Bund: WID-SEC-2026-1050 - Checkmk: Mehrere Schwachstellen Entryinfo Created: 04/10/2026 11:24 Updated: 04/10/2026 13:44 Changes: 04/10/2026 11:24 (66), 04/10/2026 13:44 (7) Complete: 🔍 Cache ID: 99:F45:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸