CVE-2026-86186

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-05. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
60(Attend)
EG Risk 60/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

September 5, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 5, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

AVideo API Rate Limit Bypass via Bot User-Agent Header | Advisories | VulnCheck

https://www.vulncheck.com/advisories/avideo-api-rate-limit-bypass-via-bot-user-agent-header
github Patch Available🟡 PoC Available

Protection Mechanism Failure: every API rate limit, including login brute-force protection, is disabled by sending a bot User-Agent · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-qmmw-hmm4-xxp7

Vendor Advisories for CVE-2026-86186(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 19:45 UTCEG score recompute
  2. 2026-09-19 19:45 UTCGHSA enrichment
  3. 2026-09-18 21:50 UTCEG score recompute
  4. 2026-09-18 21:50 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 23:56 UTCEG score recompute
  7. 2026-09-17 23:56 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 01:38 UTCEG score recompute
  10. 2026-09-17 01:38 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 03:43 UTCGHSA enrichment
  14. 2026-09-15 05:48 UTCEG score recompute
  15. 2026-09-15 05:48 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 07:54 UTCEG score recompute
  19. 2026-09-14 07:54 UTCGHSA enrichment
  20. 2026-09-13 09:59 UTCEG score recompute
  21. 2026-09-13 09:59 UTCGHSA enrichment
  22. 2026-09-12 12:05 UTCEG score recompute
  23. 2026-09-12 12:05 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 22 more
  1. 2026-09-11 14:10 UTCEG score recompute
  2. 2026-09-11 14:10 UTCGHSA enrichment
  3. 2026-09-10 16:15 UTCEG score recompute
  4. 2026-09-10 16:15 UTCGHSA enrichment
  5. 2026-09-09 18:10 UTCEG score recompute
  6. 2026-09-09 18:10 UTCGHSA enrichment
  7. 2026-09-08 22:01 UTCEPSS rescore
  8. 2026-09-08 20:14 UTCGHSA enrichment
  9. 2026-09-08 19:55 UTCEG score recompute
  10. 2026-09-08 19:55 UTCGHSA enrichment
  11. 2026-09-08 18:15 UTCEG score recompute
  12. 2026-09-08 18:15 UTCGHSA enrichment
  13. 2026-09-08 07:12 UTCEG score recompute
  14. 2026-09-08 07:12 UTCGHSA enrichment
  15. 2026-09-07 09:17 UTCEG score recompute
  16. 2026-09-07 09:17 UTCGHSA enrichment
  17. 2026-09-06 13:48 UTCEPSS rescore
  18. 2026-09-06 11:18 UTCEG score recompute
  19. 2026-09-06 11:18 UTCGHSA enrichment
  20. 2026-09-05 13:23 UTCEG score recompute
  21. 2026-09-05 12:34 UTCEG score recompute
  22. 2026-09-05 12:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86186?
CVE-2026-86186 is a medium vulnerability published on September 5, 2026. 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…
When was CVE-2026-86186 disclosed?
CVE-2026-86186 was first published in the National Vulnerability Database on September 5, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86186 actively exploited?
CVE-2026-86186 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.2% of all scored CVEs.
What is the CVSS score of CVE-2026-86186?
CVE-2026-86186 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-86186?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86186, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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