What is CVE-2023-31207?

CVE-2023-31207 is a medium-severity vulnerability in Checkmk, classified under Insertion of Sensitive Information into Log File. CVSS score: 4.4/10. Published 2023-05-02.

How severe is CVE-2023-31207?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Information disclosure in Checkmk

CVE-2023-31207

Transmission of credentials within query parameters in Checkmk <= 2.1.0p26, <= 2.0.0p35, and <= 2.2.0b6 (beta) may cause the automation user's secret to be written to the site Apache access log.

Published 2023-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (11.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 11.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Checkmk — versions 2.0.0, 2.1.0, 2.2.0
Tribe29 Checkmk — versions 2.2.0, 2.1.0, 2.0.0

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

checkmk.com/werk/15189 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-31207?: CVE-2023-31207 is a medium-severity vulnerability in Checkmk, classified under Insertion of Sensitive Information into Log File. CVSS score: 4.4/10. Published 2023-05-02.
How severe is CVE-2023-31207?: Medium severity. CVSS v3 base score is 4.4 out of 10.