CVE-2023-31207 | Automation user secret logged to Apache access log

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 update: 2025-01-30 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-31207 is rated Low Risk (22.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.22%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-31207

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.05% 0.22% +0.17%
2 2026-01-25 0.05% 0.05% +0.00%
3 2025-11-21 — 0.05% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-31207

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.4 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 0.8 3.6 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-31207

OS Trackers for CVE-2023-31207

vendor priority summary link
ubuntu medium CVE-2023-31207 medium priority: Ubuntu including 1 source packages (check-mk), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 9, needs-triage 3, ignored 1. https://ubuntu.com/security/CVE-2023-31207

Affected software / configurations for CVE-2023-31207

Vendor Product Version Raw CPE
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:-:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b1:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b2:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b3:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b4:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b5:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b6:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b7:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:b8:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:i1:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p1:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p10:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p11:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p12:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p13:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p14:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p15:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p16:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p17:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p18:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p19:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p2:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p20:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p21:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p22:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p23:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p24:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p25:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p26:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p27:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p28:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p29:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p3:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p30:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p31:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p32:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p33:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p34:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p35:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p4:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p5:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p6:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p7:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p8:*:*:*:*:*:*
checkmk checkmk 2.0.0 cpe:2.3:a:checkmk:checkmk:2.0.0:p9:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:-:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b1:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b2:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b3:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b4:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b5:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b6:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b7:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b8:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:b9:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p1:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p10:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p11:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p12:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p13:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p14:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p15:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p16:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p17:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p18:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p2:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p20:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p21:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p22:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p23:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p24:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p25:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p26:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p3:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p4:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p5:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p6:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p7:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p8:*:*:*:*:*:*
checkmk checkmk 2.1.0 cpe:2.3:a:checkmk:checkmk:2.1.0:p9:*:*:*:*:*:*

References for CVE-2023-31207

URL Tags
https://checkmk.com/werk/15189 Vendor Advisory
cvelogic Threat Intelligence