What is CVE-2026-43876?

CVE-2026-43876 is a medium-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-11.

How severe is CVE-2026-43876?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Wwbn Avideo

CVE-2026-43876

WWBN AVideo is an open source video platform. In versions up to and including 29.0, objects/notifySubscribers.json.php takes the raw message POST parameter and passes it into sendSiteEmail(), which substitutes it directly into an HTML emai…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (9.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Wwbn Avideo — versions <= 29.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-43876?: CVE-2026-43876 is a medium-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-05-11.
How severe is CVE-2026-43876?: Medium severity. CVSS v3 base score is 6.4 out of 10.