EUVD-2026-65327
GHSA-rjq7-c36f-2246
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible flaw requiring only a valid user account (PR:L); impact is strictly limited to partial confidentiality of job data with no integrity, availability, or scope-change component.
Primary rating from Vendor (Checkmk).
CVSS VectorVendor: Checkmk
Lifecycle Timeline
2DescriptionCVE.org
Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows an authenticated user who knows the ID of a background job to view that job's status and results.
AnalysisAI
Missing authorization in Checkmk's background job subsystem allows any authenticated user to view the status and output of background jobs by knowing the job ID, potentially exposing data from jobs initiated by other users or higher-privileged roles. Affected releases span the entire 2.2.0 branch and versions below 2.5.0p12, 2.4.0p36, and 2.3.0p50. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid Checkmk user account, confirmed by the CVSS 4.0 PR:L metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (Medium) accurately captures the constrained scope: only confidentiality is affected and only within the authenticated session context, with no downstream system impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Checkmk to version 2.5.0p12, 2.4.0p36, or 2.3.0p50 depending on the installed major version branch; all three are confirmed fixed releases per the vendor advisory at https://checkmk.com/werk/22115. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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