CVE-2026-86723

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

AVideo through c3edcc274c389816d434acadac07ee78eaf330c1 contains an authentication bypass vulnerability in LoginControl::verifyChallenge() that uses loose comparison (==) instead of strict comparison (===) against unset session values. Attackers with only a password can submit an empty request to verifyChallenge.json.php to bypass PGP two-factor authentication and gain full authenticated access.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 8, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

AVideo LoginControl PGP Authentication Bypass via verifyChallenge | Advisories | VulnCheck

https://www.vulncheck.com/advisories/avideo-logincontrol-pgp-authentication-bypass-via-verifychallenge
github Patch Available🟡 PoC Available

Improper authentication: `LoginControl::verifyChallenge()` compares with `==`, so an omitted `response` against an unset session challenge satisfies the PGP second factor · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-vmpj-f3mf-q4j2

Vendor Advisories for CVE-2026-86723(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 27× in last 7d / 67× 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. 2026-09-25 05:08 UTCGHSA enrichment
  2. 2026-09-24 16:57 UTCEG score recompute
  3. 2026-09-24 16:57 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 04:46 UTCEG score recompute
  6. 2026-09-24 04:46 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 16:35 UTCGHSA enrichment
  9. 2026-09-23 04:24 UTCGHSA enrichment
  10. 2026-09-22 16:13 UTCEG score recompute
  11. 2026-09-22 16:13 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 04:03 UTCEG score recompute
  14. 2026-09-22 04:02 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 15:52 UTCGHSA enrichment
  17. 2026-09-21 03:41 UTCEG score recompute
  18. 2026-09-21 03:41 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 15:30 UTCGHSA enrichment
  21. 2026-09-20 03:19 UTCEG score recompute
  22. 2026-09-20 03:19 UTCGHSA enrichment
  23. 2026-09-19 15:09 UTCGHSA enrichment
  24. 2026-09-19 02:51 UTCEG score recompute
  25. 2026-09-19 02:51 UTCGHSA enrichment
Show 42 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 14:41 UTCGHSA enrichment
  3. 2026-09-18 02:30 UTCEG score recompute
  4. 2026-09-18 02:30 UTCGHSA enrichment
  5. 2026-09-17 19:32 UTCEPSS rescore
  6. 2026-09-17 14:18 UTCGHSA enrichment
  7. 2026-09-17 02:07 UTCEG score recompute
  8. 2026-09-17 02:07 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 13:56 UTCEG score recompute
  11. 2026-09-16 13:56 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 01:45 UTCGHSA enrichment
  14. 2026-09-15 13:34 UTCEG score recompute
  15. 2026-09-15 13:34 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 01:22 UTCGHSA enrichment
  19. 2026-09-14 13:11 UTCGHSA enrichment
  20. 2026-09-14 00:59 UTCEG score recompute
  21. 2026-09-14 00:59 UTCGHSA enrichment
  22. 2026-09-13 12:48 UTCGHSA enrichment
  23. 2026-09-13 00:37 UTCEG score recompute
  24. 2026-09-13 00:37 UTCGHSA enrichment
  25. 2026-09-12 12:23 UTCGHSA enrichment
  26. 2026-09-12 00:12 UTCEG score recompute
  27. 2026-09-12 00:12 UTCGHSA enrichment
  28. 2026-09-11 14:53 UTCEPSS rescore
  29. 2026-09-11 14:53 UTCEPSS rescore
  30. 2026-09-11 12:01 UTCEG score recompute
  31. 2026-09-11 12:01 UTCGHSA enrichment
  32. 2026-09-10 23:50 UTCGHSA enrichment
  33. 2026-09-10 11:22 UTCEG score recompute
  34. 2026-09-10 11:21 UTCGHSA enrichment
  35. 2026-09-09 23:09 UTCGHSA enrichment
  36. 2026-09-09 08:21 UTCGHSA enrichment
  37. 2026-09-08 20:11 UTCEG score recompute
  38. 2026-09-08 20:11 UTCGHSA enrichment
  39. 2026-09-08 16:44 UTCEG score recompute
  40. 2026-09-08 15:50 UTCEG score recompute
  41. 2026-09-08 15:26 UTCEG score recompute
  42. 2026-09-08 15:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86723?
CVE-2026-86723 is a high vulnerability published on September 8, 2026. AVideo through c3edcc274c389816d434acadac07ee78eaf330c1 contains an authentication bypass vulnerability in LoginControl::verifyChallenge() that uses loose comparison (==) instead of strict comparison (===) against unset session values. Attackers with only a password can submit an empty request to…
When was CVE-2026-86723 disclosed?
CVE-2026-86723 was first published in the National Vulnerability Database 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-2026-86723 actively exploited?
CVE-2026-86723 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 61.6% of all scored CVEs.
What is the CVSS score of CVE-2026-86723?
CVE-2026-86723 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-86723?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86723, 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

Explore the affected products and dependency analysis for CVE-2026-86723

Explore →

Is Your Infrastructure Affected by CVE-2026-86723?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs