CVE-2026-7765CWE-863broken-access-control

CVE-2026-7765

Medium · published June 8, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
22.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00313 · 22.9th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-06-08T17:16Z
Affected products (8)
ProductVersionsFixed in
checkmk/checkmkall versions—
checkmk/checkmkall versions—
checkmk/checkmkall versions—
checkmk/checkmkall versions—
checkmk/checkmkall versions—
checkmk/checkmkall versions—
checkmk/checkmkall versions—
checkmk/checkmkall versions—
References (1)
https://checkmk.com/werk/19815 · [email protected]
EPSS history
Timeline
  • 08 JUN 12:06Z
    User Messages widget leaked issuer messages on shared dashboards
    cvelistv5