CVE-2026-112784

Medium

Description

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.

SeverityMedium

CVSS4.3

Exploit probability—

ProductOpenCATS

PublishedOct 20, 2026

First seenOct 20, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

opencats OpenCATS0.10.0 or later

Patches

github.com/opencats/OpenCATS/commit/aa3b414c3672f5010ca26c44192aa8e72d3735bd

Vendor advisories

github.com/opencats/OpenCATS/releases/tag/v0.10.0

Affected products

Product	Affected versions	Fixed in
opencats OpenCATS	v < 0.10.0	0.10.0

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