Quick answers
- Is CVE-2026-112784 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-112784 being exploited in the wild.
- How severe is CVE-2026-112784?
- Medium severity, with a CVSS score of 4.3, published 20 October 2026.
- Which products and versions are affected?
- OpenCATS before 0.10.0.
- Is there a fix for CVE-2026-112784?
- Yes: fixed in 0.10.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-112784 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-112784?
- Check whether you run OpenCATS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 0.10.0
Technical details
Missing authorization checks in the ajax/testEmailSettings.php endpoint allow any authenticated user to invoke the email sending functionality without verifying edit-level permissions. An attacker with read-level access can supply arbitrary testEmailAddress and fromAddress parameters to send emails with a spoofed From header via the configured SMTP relay. The vulnerability was fixed by adding role-based access level checks to the affected AJAX endpoints.
Affected products
- OpenCATS OpenCATS before 0.10.0
Timeline
- 2026-10-20: disclosed