CVE-2023-22359

MEDIUMNVD 4.34.3—

4.3

User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 57.7%
KEV: Not listed

Published

June 26, 2023

Last Modified

November 21, 2024

References (2)

security@checkmkhttps://checkmk.com/werk/15890
af854a3a-2127-422b-91ae-364da2661108https://checkmk.com/werk/15890

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
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2026-05-28 13:43 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2023-22359?

CVE-2023-22359 is a medium vulnerability published on June 26, 2023. User enumeration in Checkmk <=2.2.0p4 allows an authenticated attacker to enumerate usernames.

When was CVE-2023-22359 disclosed?

CVE-2023-22359 was first published in the National Vulnerability Database on June 26, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-22359 actively exploited?

CVE-2023-22359 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-22359?

CVE-2023-22359 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2023-22359?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-22359, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-22359

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-22359?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)