Unrestricted upload and download paths in check_sftp

published 2024-05-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-25912

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

Improper restriction of local upload and download paths in check_sftp in Checkmk before 2.3.0p4, 2.2.0p27, 2.1.0p44, and in Checkmk 2.0.0 (EOL) allows attackers with sufficient permissions to configure the check to read and write local files on the Checkmk site server.

Patch / fix

fixed in 2

Checkmk GmbH Checkmk 2.1.0p44, 2.2.0p27, 2.3.0p4
checkmk checkmk 2.0.0p39, 2.1.0p44, 2.2.0p27, 2.3.0p4

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-06-05)

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected products

Checkmk GmbH Checkmk
checkmk checkmk

Classification

Weakness

CWE-73 External Control of File Name or Path
CWE-610 Externally Controlled Reference to a Resource in Another Sphere

References

checkmk.com /werk/15200
vendor-advisory

Sources

CVE List CVE-2024-28826
NVD CVE-2024-28826

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary