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Vulnerability record · CVE-2026-84476 · published 1 September 2026

CVE-2026-84476: Authentication bypass by spoofing vulnerability

WWBN AVideo fails to validate trusted proxies before accepting X-Real-IP and X-Forwarded-For headers, allowing attackers to spoof the client address used by enforceRateLimit(). Attackers can rotate the header value per request to bypass login rate limiting and perform unlimited credential guessing attacks.

8.7 CVSS 4.0 High EPSS 0.43% · top 64.8% CWE-290 · Authentication bypass by spoofing Deferred
8.7CVSS 4.0 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
8 Sep 2026Last modified by NVD

Description

WWBN AVideo fails to validate trusted proxies before accepting X-Real-IP and X-Forwarded-For headers, allowing attackers to spoof the client address used by enforceRateLimit(). Attackers can rotate the header value per request to bypass login rate limiting and perform unlimited credential guessing attacks.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/WWBN/AVideo/security/advisories/GHSA-gg65-574p-h4wc
https://www.vulncheck.com/advisories/wwbn-avideo-authentication-bypass-via-x-real-ip-header
https://github.com/WWBN/AVideo/security/advisories/GHSA-gg65-574p-h4wc

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Source: NIST National Vulnerability Database (record CVE-2026-84476), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.