CVE-2026-112784

MEDIUM 4.3

OpenCATS before 0.10.0 Missing Authorization via ajax/testEmailSettings.php

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

OpenCATS before 0.10.0 contains a missing authorization vulnerability in ajax/testEmailSettings.php that allows any authenticated user to send mail through the configured SMTP relay. Read-level users can supply testEmailAddress and fromAddress parameters to send the fixed test message to any recipient with a spoofed From address.

CWE	CWE-862
Vendor	opencats
Product	opencats
Published	Oct 20, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

opencats / OpenCATS

0 < 0.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/opencats/OpenCATS/issues/720 github.com: https://github.com/opencats/OpenCATS/commit/aa3b414c3672f5010ca26c44192aa8e72d3735bd github.com: https://github.com/opencats/OpenCATS/releases/tag/v0.10.0 github.com: https://github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/ajax/testEmailSettings.php vulncheck.com: https://www.vulncheck.com/advisories/opencats-before-0.10.0-missing-authorization-via-ajax-testemailsettings-php

Credits

lighthousekeeper1212 🔍 leediay153 from Viettel Post