cvedb.io
CVE-2026-43880
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-05-11T22:22:12.530 · Last modified 2026-06-17T10:50:01.143

Summary

WWBN AVideo is an open source video platform. In versions up to and including 29.0, objects/sendEmail.json.php exposes two branches depending on whether contactForm=1 is submitted. When the parameter is omitted, the endpoint sets $sendTo to an attacker-supplied email and, for unauthenticated callers, uses the site's own contact email as the message From:/Reply-To:. The endpoint is explicitly allow-listed as a "public write action" in objects/functionsSecurity.php (line 885), so it requires no authentication or CSRF token. An unauthenticated attacker (solving a captcha) can force the site's own SMTP infrastructure to send attacker-composed emails to arbitrary recipients with the site's legitimate sender address, passing SPF/DKIM/DMARC for the site's domain — ideal for targeted phishing and

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.