What is CVE-2026-82643?

CVE-2026-82643 is a medium-severity vulnerability in Wwbn Avideo, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2026-08-30.

How severe is CVE-2026-82643?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Wwbn Avideo

CVE-2026-82643

WWBN AVideo contains an unauthenticated credential submission vulnerability in plugin/Live/api/preauthorize.json.php that accepts credentials over GET without rate limiting. Attackers can submit correct credentials repeatedly to trigger uncapped two-factor confirmation emails and perform sustained password guessing attacks against user accounts.

Published 2026-08-30 · last modified 2026-09-02.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (26.4th percentile), scored 2026-10-15.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Wwbn Avideo

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

github.com/WWBN/AVideo/security/advisories/GHSA-gxxj-32wm-g48f (vendor-advisory)
www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-rate-limit-bypass-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-82643?: CVE-2026-82643 is a medium-severity vulnerability in Wwbn Avideo, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2026-08-30.
How severe is CVE-2026-82643?: Medium severity. CVSS v3 base score is 6.5 out of 10.