CVE-2026-86186: AVideo API Rate Limit Bypass via Bot User-Agent Header

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-05 · updated 2026-09-08
Weakness: CWE-307

Description

AVideo API fails to enforce rate limits when clients send a bot User-Agent header, allowing attackers to bypass all eight protected operations including login brute-force protection. Attackers can send requests with a bot User-Agent to disable rate limiting and perform unlimited password guessing attempts against any account from a single IP address.

Affected products

WWBN AVideo: through 29.0

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-qmmw-hmm4-xxp7
https://www.vulncheck.com/advisories/avideo-api-rate-limit-bypass-via-bot-user-agent-header
https://github.com/WWBN/AVideo/security/advisories/GHSA-qmmw-hmm4-xxp7

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