CVE catalog

CVE-2026-7765

Incorrect authorization in the User Messages dashboard widget in Checkmk <2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an

[CVE catalog]

Severity
Medium · CVSS 6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
Source
[NVD] · [CVE record]
EPSS
0.19% · Oct 25, 2026

Incorrect authorization in the User Messages dashboard widget in Checkmk <2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an attacker who knows a valid public dashboard share token to read the issuer's personal messages by sending requests to the underlying endpoint, even without a User Messages widget present.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
CpecheckmkNot reportedNot reportedunknown
CpecheckmkNot reportedNot reportedunknown
Ubuntucheck-mkpro1.2.6p5-1vulnerable
Ubuntucheck-mkpro1.2.6p12-1vulnerable
Ubuntucheck-mkpro1.2.6p12-1ubuntu0.16.04.1vulnerable
Ubuntucheck-mkpro1.2.6p12-1ubuntu0.16.04.1+esm1vulnerable
Ubuntucheck-mk18.041.2.8p16-1ubuntu0.1vulnerable
Ubuntucheck-mk18.041.2.8p16-1ubuntu0.2vulnerable

Fixed-version evidence

OpenFactory catalog packages

No matching packages in this catalog.

Observed:

References

[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]