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CVE-2026-3103 (GCVE-0-2026-3103)

Vulnerability from cvelistv5 – Published: 2026-03-04 13:15 – Updated: 2026-03-04 14:07
VLAI
Title
Deletion of passwords via RestApi
Summary
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.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-04 14:07 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
Checkmk GmbH Checkmk Affected: 2.4.0 , < 2.4.0p23 (semver)
Affected: 2.3.0 , < 2.3.0p43 (semver)
Affected: 2.2.0 (semver)
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
    cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*
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    "redhat_vex": {
      "current_release_date": "2026-03-27T07:44:59+00:00",
      "cve": "CVE-2026-3103",
      "id": "CVE-2026-3103",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Deletion of passwords via RestApi",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3103.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-3103\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-04T14:07:07.329446Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-04T14:07:10.560Z\"}}], \"cna\": {\"title\": \"Deletion of passwords via RestApi\", \"impacts\": [{\"capecId\": \"CAPEC-122\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-122: Privilege Abuse\"}]}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N\"}}], \"affected\": [{\"vendor\": \"Checkmk GmbH\", \"product\": \"Checkmk\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.4.0\", \"lessThan\": \"2.4.0p23\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"2.3.0\", \"lessThan\": \"2.3.0p43\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"2.2.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://checkmk.com/werk/19041\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A logic error in the remove_password() function in Checkmk GmbH\u0027s Checkmk versions \u003c2.4.0p23, \u003c2.3.0p43, and 2.2.0 (EOL) allows a low-privileged user to cause data loss.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-863\", \"description\": \"CWE-863: Incorrect Authorization\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.4.0p23\", \"versionStartIncluding\": \"2.4.0\"}, {\"criteria\": \"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.3.0p43\", \"versionStartIncluding\": \"2.3.0\"}, {\"criteria\": \"cpe:2.3:a:checkmk:checkmk:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"2.2.0p40\", \"versionStartIncluding\": \"2.2.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"f7d6281c-4801-44ce-ace2-493291dedb0f\", \"shortName\": \"Checkmk\", \"dateUpdated\": \"2026-03-04T13:15:41.086Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-3103\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-04T14:07:12.933Z\", \"dateReserved\": \"2026-02-24T09:54:07.560Z\", \"assignerOrgId\": \"f7d6281c-4801-44ce-ace2-493291dedb0f\", \"datePublished\": \"2026-03-04T13:15:41.086Z\", \"assignerShortName\": \"Checkmk\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.