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CVE-2026-3103

Deletion of passwords via RestApi

Medium5.3EPSS 0.20%
Published
Updated
Reserved
Assigned by
Checkmk

Description

A logic error in the remove_password() function in Checkmk GmbH's Checkmk versions <2.4.0p23, <2.3.0p43, and 2.2.0 (EOL) allows a low-privileged user to cause data loss.

Scores

CVSS scores of CVE-2026-3103, by who scored it
Scored byCVSSScoreVector
CheckmkCNA (assigner)4.0Medium5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
NVDNVD · Analyzed4.0Medium5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/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
EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

Affected products

  • Checkmk GmbH · Checkmk

    • affected 2.4.0 – < 2.4.0p23
    • affected 2.3.0 – < 2.3.0p43
    • affected 2.2.0

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .