CVE-2026-82643

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-08-30. 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.

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.

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
11%
KEV
Not listed

Published

August 30, 2026

Last Modified

September 2, 2026

Advisory Details (2)

Auto-updated Aug 30, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

WWBN AVideo Unauthenticated Rate Limit Bypass via preauthorize.json.php | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wwbn-avideo-unauthenticated-rate-limit-bypass-via-preauthorize-json-php
github Patch Available🟡 PoC Available

Unauthenticated credential submission with no rate limiting in plugin/Live/api/preauthorize.json.php, reachable over GET where the CSRF guard does not apply, allowing uncapped 2FA email dispatch · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-gxxj-32wm-g48f

Vendor Advisories for CVE-2026-82643(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 18× in last 7d / 56× 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 01:15 UTCEG score recompute
  2. 2026-09-19 01:15 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 02:11 UTCEG score recompute
  5. 2026-09-18 02:11 UTCGHSA enrichment
  6. 2026-09-17 03:07 UTCEG score recompute
  7. 2026-09-17 03:07 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-16 03:38 UTCGHSA enrichment
  11. 2026-09-15 04:34 UTCEG score recompute
  12. 2026-09-15 04:34 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-14 05:30 UTCEG score recompute
  16. 2026-09-14 05:30 UTCGHSA enrichment
  17. 2026-09-13 06:26 UTCEG score recompute
  18. 2026-09-13 06:26 UTCGHSA enrichment
  19. 2026-09-12 07:22 UTCEG score recompute
  20. 2026-09-12 07:22 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 08:17 UTCEG score recompute
  24. 2026-09-11 08:17 UTCGHSA enrichment
  25. 2026-09-10 09:13 UTCGHSA enrichment
Show 31 more
  1. 2026-09-09 10:09 UTCEG score recompute
  2. 2026-09-09 10:09 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 11:04 UTCEG score recompute
  5. 2026-09-08 11:04 UTCGHSA enrichment
  6. 2026-09-07 11:50 UTCEG score recompute
  7. 2026-09-07 11:50 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-06 12:43 UTCEG score recompute
  10. 2026-09-06 12:43 UTCGHSA enrichment
  11. 2026-09-05 15:31 UTCEPSS rescore
  12. 2026-09-05 13:39 UTCGHSA enrichment
  13. 2026-09-04 14:30 UTCEG score recompute
  14. 2026-09-04 14:30 UTCGHSA enrichment
  15. 2026-09-04 05:07 UTCEPSS rescore
  16. 2026-09-03 15:26 UTCEG score recompute
  17. 2026-09-03 15:26 UTCGHSA enrichment
  18. 2026-09-02 16:20 UTCEG score recompute
  19. 2026-09-02 16:20 UTCGHSA enrichment
  20. 2026-09-02 14:12 UTCEPSS rescore
  21. 2026-09-01 20:13 UTCEG score recompute
  22. 2026-09-01 20:12 UTCGHSA enrichment
  23. 2026-09-01 13:54 UTCEPSS rescore
  24. 2026-09-01 04:40 UTCEPSS rescore
  25. 2026-09-01 04:40 UTCEPSS rescore
  26. 2026-08-31 21:08 UTCGHSA enrichment
  27. 2026-08-31 14:31 UTCEG score recompute
  28. 2026-08-31 14:31 UTCGHSA enrichment
  29. 2026-08-30 15:18 UTCEG score recompute
  30. 2026-08-30 14:38 UTCEG score recompute
  31. 2026-08-30 14:34 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-82643?
CVE-2026-82643 is a medium vulnerability published on August 30, 2026. 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…
When was CVE-2026-82643 disclosed?
CVE-2026-82643 was first published in the National Vulnerability Database on August 30, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82643 actively exploited?
CVE-2026-82643 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 89.3% of all scored CVEs.
What is the CVSS score of CVE-2026-82643?
CVE-2026-82643 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-82643?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82643, 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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