CVE-2026-112784
OpenCATS before 0.10.0 Missing Authorization via ajax/testEmailSettings.php
opencats OpenCATS
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 0.10.0OpenCATSCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- OpenCATSaffected: all versions before 0.10.0CVE List
References 5
- github.com/opencats/OpenCATS/commit/aa3b414c3672f5010ca26c44192aa8e72d3735bdFixvia CVE List
- github.com/opencats/OpenCATS/releases/tag/v0.10.0Fixvia CVE List
- vulncheck.com/advisories/opencats-before-0.10.0-missing-authorization-via-ajax-testemailsettings-phpAdvisoryvia CVE List
- github.com/opencats/OpenCATS/issues/720Referencevia CVE List
- github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/ajax/testEmailSettings.phpReferencevia CVE List