5.3

CVE-2026-17548: checkmk gmbh checkmk Missing Authorization

CVSS: 5.3v4.0MediumDeferred
AliasesUBUNTU-CVE-2026-17548
Published 25-08-2026Last modified 25-08-2026
Open JSON

Vulnerability summary

CVE-2026-17548 is a medium (CVSS 5.3) Missing Authorization vulnerability in checkmk gmbh checkmk. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.2% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 25-08-2026
    PublishedVulnerability first disclosed.
  2. 25-08-2026
    Last modifiedVulnerability information updated.

Description

Missing authorization in Checkmk <2.5.0p12, <2.4.0p36, <2.3.0p50 and all 2.2.0 versions allows an authenticated user who knows the ID of a background job to view that job's status and results.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Checkmk gmbh1 product
  • checkmkEOL≥ 2.5.0, < 2.5.0p12 | ≥ 2.4.0, < 2.4.0p36 | ≥ 2.3.0, < 2.3.0p50 | 2.2.0
Ubuntu1 product
  • check-mkAll versions (No fix recorded)

2 vendors · 2 products

References

3 links