CVE-2026-82644

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-30. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

WWBN AVideo (current e01e41ecc and earlier) contains a brute-force rate limiting bypass in enforceRateLimit(), which protects login.json.php and 13 other endpoints. The function stores its attempt counter via a cache layer (ObjectYPT::setCacheGlobal) that silently discards writes for any client identified as a bot by isBot(). Because isBot() treats a missing User-Agent header as a bot by default — and also matches common bot identifiers such as 'curl', 'bot', 'crawler', and 'spider' — the counter never increments for such clients, so the rate limit never fires. An unauthenticated attacker can therefore submit unlimited login attempts (e.g., by omitting the User-Agent header or using curl's default User-Agent), enabling unrestricted password-guessing attacks.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

August 30, 2026

Last Modified

September 1, 2026

Advisory Details (2)

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

WWBN AVideo Brute-force Rate Limiting Bypass via Missing User-Agent | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wwbn-avideo-brute-force-rate-limiting-bypass-via-missing-user-agent
github Patch Available🟡 PoC Available

Brute-force rate limiting is inert for any bot-like User-Agent: enforceRateLimit stores its counter through a cache layer that discards writes for bots, so sending no User-Agent disables the limit on login and 13 other endpoints · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-6893-mcgv-9p2x

Vendor Advisories for CVE-2026-82644(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 26× in last 7d / 83× 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 22:58 UTCEG score recompute
  2. 2026-09-19 22:58 UTCGHSA enrichment
  3. 2026-09-19 11:43 UTCGHSA enrichment
  4. 2026-09-19 00:20 UTCEG score recompute
  5. 2026-09-19 00:20 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 13:04 UTCGHSA enrichment
  8. 2026-09-18 01:48 UTCEG score recompute
  9. 2026-09-18 01:48 UTCGHSA enrichment
  10. 2026-09-17 14:32 UTCGHSA enrichment
  11. 2026-09-17 03:07 UTCGHSA enrichment
  12. 2026-09-16 15:47 UTCEG score recompute
  13. 2026-09-16 15:47 UTCGHSA enrichment
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 04:32 UTCGHSA enrichment
  17. 2026-09-15 17:16 UTCGHSA enrichment
  18. 2026-09-15 06:00 UTCEG score recompute
  19. 2026-09-15 06:00 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 18:44 UTCGHSA enrichment
  23. 2026-09-14 06:25 UTCGHSA enrichment
  24. 2026-09-13 19:10 UTCEG score recompute
  25. 2026-09-13 19:10 UTCGHSA enrichment
Show 58 more
  1. 2026-09-13 07:54 UTCGHSA enrichment
  2. 2026-09-12 20:39 UTCEG score recompute
  3. 2026-09-12 20:39 UTCGHSA enrichment
  4. 2026-09-12 09:23 UTCGHSA enrichment
  5. 2026-09-11 22:06 UTCEG score recompute
  6. 2026-09-11 22:06 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 10:50 UTCEG score recompute
  10. 2026-09-11 10:50 UTCGHSA enrichment
  11. 2026-09-10 23:00 UTCGHSA enrichment
  12. 2026-09-10 11:44 UTCEG score recompute
  13. 2026-09-10 11:44 UTCGHSA enrichment
  14. 2026-09-09 23:50 UTCGHSA enrichment
  15. 2026-09-09 10:52 UTCGHSA enrichment
  16. 2026-09-08 23:36 UTCEG score recompute
  17. 2026-09-08 23:36 UTCGHSA enrichment
  18. 2026-09-08 22:01 UTCEPSS rescore
  19. 2026-09-08 06:38 UTCGHSA enrichment
  20. 2026-09-07 19:18 UTCEG score recompute
  21. 2026-09-07 19:18 UTCGHSA enrichment
  22. 2026-09-07 08:02 UTCGHSA enrichment
  23. 2026-09-06 20:37 UTCEG score recompute
  24. 2026-09-06 20:37 UTCGHSA enrichment
  25. 2026-09-06 13:48 UTCEPSS rescore
  26. 2026-09-06 09:19 UTCGHSA enrichment
  27. 2026-09-05 22:03 UTCEG score recompute
  28. 2026-09-05 22:03 UTCGHSA enrichment
  29. 2026-09-05 15:31 UTCEPSS rescore
  30. 2026-09-05 10:48 UTCGHSA enrichment
  31. 2026-09-04 23:30 UTCEG score recompute
  32. 2026-09-04 23:30 UTCGHSA enrichment
  33. 2026-09-04 11:40 UTCEG score recompute
  34. 2026-09-04 11:40 UTCGHSA enrichment
  35. 2026-09-04 05:07 UTCEPSS rescore
  36. 2026-09-04 00:24 UTCGHSA enrichment
  37. 2026-09-03 13:09 UTCGHSA enrichment
  38. 2026-09-03 01:52 UTCGHSA enrichment
  39. 2026-09-02 14:34 UTCEG score recompute
  40. 2026-09-02 14:34 UTCGHSA enrichment
  41. 2026-09-02 14:12 UTCEPSS rescore
  42. 2026-09-02 03:15 UTCGHSA enrichment
  43. 2026-09-01 15:57 UTCEG score recompute
  44. 2026-09-01 15:57 UTCGHSA enrichment
  45. 2026-09-01 14:30 UTCEG score recompute
  46. 2026-09-01 14:29 UTCGHSA enrichment
  47. 2026-09-01 13:54 UTCEPSS rescore
  48. 2026-09-01 08:24 UTCEG score recompute
  49. 2026-09-01 08:24 UTCGHSA enrichment
  50. 2026-09-01 04:40 UTCEPSS rescore
  51. 2026-09-01 04:40 UTCEPSS rescore
  52. 2026-08-31 21:08 UTCGHSA enrichment
  53. 2026-08-31 13:56 UTCGHSA enrichment
  54. 2026-08-31 02:34 UTCEG score recompute
  55. 2026-08-31 02:34 UTCGHSA enrichment
  56. 2026-08-30 15:18 UTCEG score recompute
  57. 2026-08-30 14:37 UTCEG score recompute
  58. 2026-08-30 14:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82644?
CVE-2026-82644 is a high vulnerability published on August 30, 2026. WWBN AVideo (current e01e41ecc and earlier) contains a brute-force rate limiting bypass in enforceRateLimit(), which protects login.json.php and 13 other endpoints. The function stores its attempt counter via a cache layer (ObjectYPT::setCacheGlobal) that silently discards writes for any client…
When was CVE-2026-82644 disclosed?
CVE-2026-82644 was first published in the National Vulnerability Database on August 30, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82644 actively exploited?
CVE-2026-82644 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 81.3% of all scored CVEs.
What is the CVSS score of CVE-2026-82644?
CVE-2026-82644 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-82644?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82644, 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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