CVE-2026-7765

June 9, 2026, 2:49 p.m.

6.3
Medium

Description

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.

Product(s) Impacted

Vendor Product Versions
Checkmk
  • Checkmk
  • 2.5.0

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-863
Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a checkmk checkmk 2.5.0 - / / / / / /
a checkmk checkmk 2.5.0 b1 / / / / / /
a checkmk checkmk 2.5.0 b2 / / / / / /
a checkmk checkmk 2.5.0 b3 / / / / / /
a checkmk checkmk 2.5.0 p1 / / / / / /
a checkmk checkmk 2.5.0 p2 / / / / / /
a checkmk checkmk 2.5.0 p3 / / / / / /
a checkmk checkmk 2.5.0 p4 / / / / / /

References

https://checkmk.com/werk/19815

Tags

CWE-863
[email protected]
2026-06-08
CVE-2026-7765

CVSS Score

6.3 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: PRESENT
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: LOW
  • Integrity Impact: NONE
  • Availability Impact: NONE
  • Exploit Maturity: NOT_DEFINED

    • 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/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

    View Vector String

Timeline

Published: June 8, 2026, 1:16 p.m.
Last Modified: June 9, 2026, 2:49 p.m.

Status : Analyzed

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.