CVE-2026-7765

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Source
https://cve.org/CVERecord?id=CVE-2026-7765
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7765.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-7765
Downstream
Published
2026-06-08T12:06:02.840Z
Modified
2026-07-08T08:11:37.320269948Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
User Messages widget leaked issuer messages on shared dashboards
Details

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.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "2.5.0"
                },
                {
                    "fixed": "2.5.0p5"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "introduced": "2.5.0"
                },
                {
                    "fixed": "2.5.0p5"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7765.json",
    "cna_assigner": "Checkmk",
    "cwe_ids": [
        "CWE-863"
    ]
}
References

Affected packages

Git / github.com/checkmk/checkmk

Affected ranges

Type
GIT
Repo
https://github.com/checkmk/checkmk
Events
Introduced
a35953b1c7f874fabb2e68f519d4281b0d469a3f
Last affected
4488bab2392314ec74c09ecde1f09187dcedf2b3
Database specific 
{
    "source": "CPE_STRING",
    "cpe": [
        "cpe:2.3:a:checkmk:checkmk:2.5.0:-:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:b1:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:p1:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:b2:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:p2:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:b3:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:p3:*:*:*:*:*:*",
        "cpe:2.3:a:checkmk:checkmk:2.5.0:p4:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "2.5.0-NA"
        },
        {
            "last_affected": "2.5.0-NA"
        },
        {
            "introduced": "2.5.0-b1"
        },
        {
            "last_affected": "2.5.0-b1"
        },
        {
            "introduced": "2.5.0-p1"
        },
        {
            "last_affected": "2.5.0-p1"
        },
        {
            "introduced": "2.5.0-b2"
        },
        {
            "last_affected": "2.5.0-b2"
        },
        {
            "introduced": "2.5.0-p2"
        },
        {
            "last_affected": "2.5.0-p2"
        },
        {
            "introduced": "2.5.0-b3"
        },
        {
            "last_affected": "2.5.0-b3"
        },
        {
            "introduced": "2.5.0-p3"
        },
        {
            "last_affected": "2.5.0-p3"
        },
        {
            "introduced": "2.5.0-p4"
        },
        {
            "last_affected": "2.5.0-p4"
        }
    ]
}

Affected versions

2.*
2.5.0-NA
2.5.0-b1
2.5.0-b2
2.5.0-b3
2.5.0-p4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7765.json"