CVE-2026-67337

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-01. 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 week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled. Attackers with valid primary credentials can access authenticated routes without completing second-factor verification by exploiting premature session caching.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

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%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 1, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
Patch available. Sources: github.
generic

better-auth before 1.4.9 Two-Factor Authentication Bypass via session.cookieCache | Advisories | VulnCheck

https://www.vulncheck.com/advisories/better-auth-before-two-factor-authentication-bypass-via-session-cookiecache
github Patch Available

Two-Factor Authentication Bypass via Premature Session Caching (session.cookieCache) · Advisory · better-auth/better-auth · GitHub

https://github.com/better-auth/better-auth/security/advisories/GHSA-xg6x-h9c9-2m83

Vendor Advisories for CVE-2026-67337(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
better-auth—
  • every version up to 1.4.9: fixed in 1.4.9
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× 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.

Showing the most recent 100 of 167 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 06:26 UTCEG score recompute
  3. 2026-10-04 06:26 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-02 17:56 UTCEPSS rescore
  6. 2026-10-02 10:29 UTCEG score recompute
  7. 2026-10-02 10:29 UTCGHSA enrichment
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-10-01 02:43 UTCEG score recompute
  10. 2026-10-01 02:43 UTCGHSA enrichment
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-29 06:47 UTCEG score recompute
  13. 2026-09-29 06:47 UTCGHSA enrichment
  14. 2026-09-28 13:52 UTCEPSS rescore
  15. 2026-09-27 18:22 UTCEG score recompute
  16. 2026-09-27 18:22 UTCGHSA enrichment
  17. 2026-09-27 13:48 UTCEPSS rescore
  18. 2026-09-26 15:59 UTCEPSS rescore
  19. 2026-09-25 04:50 UTCEG score recompute
  20. 2026-09-25 04:50 UTCGHSA enrichment
  21. 2026-09-24 02:31 UTCEG score recompute
  22. 2026-09-24 02:31 UTCGHSA enrichment
  23. 2026-09-23 17:54 UTCEPSS rescore
  24. 2026-09-23 04:48 UTCEG score recompute
  25. 2026-09-23 04:48 UTCGHSA enrichment
Show 75 more
  1. 2026-09-22 06:59 UTCEG score recompute
  2. 2026-09-22 06:59 UTCGHSA enrichment
  3. 2026-09-20 21:14 UTCEG score recompute
  4. 2026-09-20 21:14 UTCGHSA enrichment
  5. 2026-09-20 20:16 UTCEPSS rescore
  6. 2026-09-19 23:31 UTCEG score recompute
  7. 2026-09-19 23:31 UTCGHSA enrichment
  8. 2026-09-18 23:19 UTCEG score recompute
  9. 2026-09-18 23:19 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 01:36 UTCEG score recompute
  12. 2026-09-18 01:36 UTCGHSA enrichment
  13. 2026-09-17 03:53 UTCEG score recompute
  14. 2026-09-17 03:53 UTCGHSA enrichment
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 05:39 UTCEG score recompute
  17. 2026-09-16 05:39 UTCGHSA enrichment
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 07:57 UTCEG score recompute
  20. 2026-09-15 07:57 UTCGHSA enrichment
  21. 2026-09-14 10:13 UTCEG score recompute
  22. 2026-09-14 10:13 UTCGHSA enrichment
  23. 2026-09-13 11:58 UTCEG score recompute
  24. 2026-09-13 11:58 UTCGHSA enrichment
  25. 2026-09-12 14:15 UTCGHSA enrichment
  26. 2026-09-11 16:32 UTCEG score recompute
  27. 2026-09-11 16:32 UTCGHSA enrichment
  28. 2026-09-11 14:53 UTCEPSS rescore
  29. 2026-09-11 09:37 UTCEPSS rescore
  30. 2026-09-10 18:49 UTCEG score recompute
  31. 2026-09-10 18:49 UTCGHSA enrichment
  32. 2026-09-09 19:44 UTCEG score recompute
  33. 2026-09-09 19:44 UTCGHSA enrichment
  34. 2026-09-08 22:01 UTCEPSS rescore
  35. 2026-09-08 21:04 UTCGHSA enrichment
  36. 2026-09-07 19:17 UTCEG score recompute
  37. 2026-09-07 19:17 UTCGHSA enrichment
  38. 2026-09-07 16:01 UTCEPSS rescore
  39. 2026-09-06 13:47 UTCEPSS rescore
  40. 2026-09-06 05:51 UTCEG score recompute
  41. 2026-09-06 05:51 UTCGHSA enrichment
  42. 2026-09-05 15:31 UTCEPSS rescore
  43. 2026-09-05 08:08 UTCEG score recompute
  44. 2026-09-05 08:08 UTCGHSA enrichment
  45. 2026-09-04 10:25 UTCEG score recompute
  46. 2026-09-04 10:25 UTCGHSA enrichment
  47. 2026-09-04 05:07 UTCEPSS rescore
  48. 2026-09-03 09:03 UTCEG score recompute
  49. 2026-09-03 09:03 UTCGHSA enrichment
  50. 2026-09-02 14:12 UTCEPSS rescore
  51. 2026-09-01 22:24 UTCEG score recompute
  52. 2026-09-01 22:24 UTCGHSA enrichment
  53. 2026-09-01 13:54 UTCEPSS rescore
  54. 2026-09-01 04:40 UTCEPSS rescore
  55. 2026-08-31 23:19 UTCEG score recompute
  56. 2026-08-31 23:19 UTCGHSA enrichment
  57. 2026-08-30 19:57 UTCEG score recompute
  58. 2026-08-30 19:57 UTCGHSA enrichment
  59. 2026-08-30 19:17 UTCEPSS rescore
  60. 2026-08-30 01:22 UTCEPSS rescore
  61. 2026-08-29 22:13 UTCEG score recompute
  62. 2026-08-29 22:13 UTCGHSA enrichment
  63. 2026-08-28 21:42 UTCEPSS rescore
  64. 2026-08-27 08:49 UTCEG score recompute
  65. 2026-08-27 08:49 UTCGHSA enrichment
  66. 2026-08-26 14:47 UTCEPSS rescore
  67. 2026-08-26 10:27 UTCEG score recompute
  68. 2026-08-26 10:27 UTCGHSA enrichment
  69. 2026-08-25 13:49 UTCEPSS rescore
  70. 2026-08-25 12:35 UTCGHSA enrichment
  71. 2026-08-24 14:52 UTCEG score recompute
  72. 2026-08-24 14:52 UTCGHSA enrichment
  73. 2026-08-23 17:08 UTCEG score recompute
  74. 2026-08-23 17:08 UTCGHSA enrichment
  75. 2026-08-23 00:19 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-67337?
CVE-2026-67337 is a medium vulnerability published on August 1, 2026. better-auth versions before 1.4.9 contain a two-factor authentication bypass vulnerability when session.cookieCache is enabled. Attackers with valid primary credentials can access authenticated routes without completing second-factor verification by exploiting premature session caching.
When was CVE-2026-67337 disclosed?
CVE-2026-67337 was first published on August 1, 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-2026-67337 actively exploited?
CVE-2026-67337 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67337?
CVE-2026-67337 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-67337?
A fix for CVE-2026-67337 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-67337 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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