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Medium severity5.3NVD Advisory· Published Jun 8, 2026· Updated Jun 9, 2026

CVE-2026-7765

CVE-2026-7765

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.

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Affected products

9
  • Checkmk/Checkmk9 versions
    cpe:2.3:a:checkmk:checkmk:2.5.0:-:*:*:*:*:*:*+ 8 more
    • 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:b2:*:*:*:*:*:*
    • cpe:2.3:a:checkmk:checkmk:2.5.0:b3:*:*:*:*:*:*
    • cpe:2.3:a:checkmk:checkmk:2.5.0:p1:*:*:*:*:*:*
    • cpe:2.3:a:checkmk:checkmk:2.5.0:p2:*:*:*:*:*:*
    • cpe:2.3:a:checkmk:checkmk:2.5.0:p3:*:*:*:*:*:*
    • cpe:2.3:a:checkmk:checkmk:2.5.0:p4:*:*:*:*:*:*
    • (no CPE)range: <2.5.0p5

Patches

Vulnerability mechanics

References

1

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