CVE-2026-8406

HIGH EPSS 14.7%
Published Jun 11, 20262w ago · Modified Jun 17, 20262w ago
7.1 CVSS 4.0
High
Find Similar
Published Jun 11, 2026 2w ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
14.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-639

References 3

  • fluidattacks.com https://fluidattacks.com/es/advisories/melanie
  • github.com https://github.com/OS4ED/openSIS-Classic
  • github.com https://github.com/OS4ED/openSIS-Classic/commit/c45d43146167324bae06bdf09de3e4bd2e5e478f

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.