What is CVE-2026-85177?

CVE-2026-85177 is a medium-severity vulnerability, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-09-03.

How severe is CVE-2026-85177?

Medium severity. CVSS v3 base score is 5.4 out of 10.

CVE-2026-85177

CVE-2026-85177

CRMEB through 6.0.0 fails to validate message ownership in the edit_message handler of MessageSystemController.php, allowing authenticated users to modify arbitrary system inbox messages. Attackers can update any message's columns including is_del, look, and uid to delete, mark read, or reassign victim notifications without authorization.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

disclosure@vulncheck.com
disclosure@vulncheck.com
disclosure@vulncheck.com
disclosure@vulncheck.com

Frequently asked questions

What is CVE-2026-85177?: CVE-2026-85177 is a medium-severity vulnerability, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-09-03.
How severe is CVE-2026-85177?: Medium severity. CVSS v3 base score is 5.4 out of 10.