CVE-2026-8406
openSIS Classic 9.3 contains an insecure direct object reference vulnerability in the messaging module. Any authenticated user with access to the messaging module can request sent-message details from modules/messaging/SentMail.php by supplying an arbitrary mail_id value.
Published:Jun 11, 2026
Last Modified:Jun 11, 2026
EPS:Jun 11, 2026
EPSS Score:
CVSS Score:7.1
Affected Products
Vendor
Product
Action
Vendor
Os4ed
Product
Opensis-classic
Os4ed
Opensis-classic
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
