CVE-2026-85177: CRMEB through 6.0.0 Unauthorized Message Modification via edit_message

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-03 · updated 2026-09-23
Weakness: CWE-639

Description

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.

Affected products

CRMEB: through 6.0.0

References

https://github.com/crmeb/CRMEB
https://github.com/crmeb/CRMEB/blob/v6.0.0/crmeb/app/api/controller/v1/user/MessageSystemController.php
https://github.com/crmeb/CRMEB/issues/120
https://www.vulncheck.com/advisories/crmeb-through-6.0.0-unauthorized-message-modification-via-edit-message
https://github.com/crmeb/CRMEB/issues/120

Get alerted when CVE-2026-85177 or the next vulnerability affects your stack