What is CVE-2026-84483?

CVE-2026-84483 is a medium-severity vulnerability in Wwbn Avideo, classified under Use of Hard-coded Cryptographic Key. CVSS score: 5.3/10. Published 2026-09-01.

How severe is CVE-2026-84483?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Wwbn Avideo

CVE-2026-84483

WWBN AVideo through commit 9c39d8c8 contains an incomplete authentication bypass in encryptPass.json.php that allows unauthenticated attackers to compute valid HMAC tokens using the public site URL and current time. Attackers can forge authentication tokens by computing hash_hmac with the site's base URL as the key and submit arbitrary passwords to receive encrypted hashes, enabling offline precomputation attacks against stolen password databases.

Published 2026-09-01 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (37.5th percentile), scored 2026-10-17.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002

Affected products

Wwbn Avideo

Weakness classification (CWE)

CWE-321 — Use of Hard-coded Cryptographic Key

References

github.com/WWBN/AVideo/security/advisories/GHSA-q92q-q2f7-v4fc (vendor-advisory)
www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-password-hash-oracle-v… (third-party-advisory)

Frequently asked questions

What is CVE-2026-84483?: CVE-2026-84483 is a medium-severity vulnerability in Wwbn Avideo, classified under Use of Hard-coded Cryptographic Key. CVSS score: 5.3/10. Published 2026-09-01.
How severe is CVE-2026-84483?: Medium severity. CVSS v3 base score is 5.3 out of 10.