CVE-2026-82466

HIGHPre-NVD 8.78.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.7 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-29. A secondary CVSS source baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Rodauth before 2.46.0 contains an authentication bypass vulnerability in the webauthn_login route that allows logged-in users to authenticate as any other account. Attackers can exploit improper account resolution logic that falls back to session account identifiers instead of validating the credential binding to complete authentication as arbitrary users.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
39
EG Risk 39/100

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 (value × EchelonGraph’s weight)
Severity87% × 45%
The EG Score, 8.7 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 29, 2026

Last Modified

September 11, 2026

Advisory Details (4)

Auto-updated Aug 29, 2026
Patch available. Sources: github_commit, github.
Web page

Rodauth before 2.46.0 Authentication Bypass via webauthn_login | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rodauth-before-2.46.0-authentication-bypass-via-webauthn-login
Web page

GitHub - jeremyevans/rodauth: Ruby's Most Advanced Authentication Framework · GitHub

https://github.com/jeremyevans/rodauth
GitHub advisoryMentions a patch (unverified)

Account takeover in webauthn_login feature · Advisory · jeremyevans/rodauth · GitHub

https://github.com/jeremyevans/rodauth/security/advisories/GHSA-3pvr-v35r-4r75
GitHub commit

commit 35d74a9f07b2 (jeremyevans/rodauth)

Fix landed in jeremyevans/rodauth commit 35d74a9f07b2 — awaiting tagged release

https://github.com/jeremyevans/rodauth/commit/35d74a9f07b2005a8ea75fc11a6539c04f3c2840

Vendor Advisories for CVE-2026-82466(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)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-rodauth2.42.0-1, 2.42.0-2, 2.43.0-1, 2.44.0-1, 2.45.0-1
  • every version up to 2.46.0-1: fixed in 2.46.0-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 108× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 174 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 74 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  2. 2026-10-13 06:03 UTCEG score recompute
  3. 2026-10-13 06:03 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  5. 2026-10-12 14:55 UTCEG score recompute
  6. 2026-10-11 19:19 UTCEG score recompute
  7. 2026-10-11 16:36 UTCEG score recompute
  8. 2026-10-11 13:54 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  11. 2026-10-10 12:23 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  12. 2026-10-10 00:45 UTCEG score recompute
  13. 2026-10-10 00:45 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  15. 2026-10-09 02:34 UTCEG score recompute
  16. 2026-10-09 02:34 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  18. 2026-10-08 00:45 UTCEG score recompute
  19. 2026-10-08 00:45 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-10-07 06:50 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  22. 2026-10-06 19:12 UTCEG score recompute
  23. 2026-10-06 19:12 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-10-06 07:27 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
Show 75 more
  1. 2026-10-05 18:54 UTCEG score recompute
  2. 2026-10-05 18:54 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  3. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  4. 2026-10-05 07:13 UTCEG score recompute
  5. 2026-10-05 07:13 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  6. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  7. 2026-10-04 19:35 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  8. 2026-10-04 06:56 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  9. 2026-10-03 19:18 UTCEG score recompute
  10. 2026-10-03 19:18 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  11. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  12. 2026-10-03 06:43 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  13. 2026-10-02 19:05 UTCEG score recompute
  14. 2026-10-02 19:05 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  15. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  16. 2026-10-02 07:26 UTCEG score recompute
  17. 2026-10-02 07:26 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  19. 2026-10-01 19:47 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  20. 2026-10-01 07:25 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  21. 2026-09-30 19:48 UTCEG score recompute
  22. 2026-09-30 19:48 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  23. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-09-30 03:48 UTCEG score recompute
  25. 2026-09-30 03:48 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  26. 2026-09-29 08:44 UTCEG score recompute
  27. 2026-09-29 08:44 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  28. 2026-09-28 21:07 UTCEG score recompute
  29. 2026-09-28 21:07 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  30. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  31. 2026-09-28 07:18 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  32. 2026-09-27 19:40 UTCEG score recompute
  33. 2026-09-27 19:40 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  34. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  35. 2026-09-27 08:00 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  36. 2026-09-26 20:22 UTCEG score recompute
  37. 2026-09-26 20:22 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  38. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  39. 2026-09-26 08:01 UTCEG score recompute
  40. 2026-09-26 08:01 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  41. 2026-09-25 09:44 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  42. 2026-09-24 22:07 UTCEG score recompute
  43. 2026-09-24 22:07 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  44. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  45. 2026-09-24 10:03 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  46. 2026-09-23 22:25 UTCEG score recompute
  47. 2026-09-23 22:25 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  48. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  49. 2026-09-23 10:47 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  50. 2026-09-22 23:06 UTCEG score recompute
  51. 2026-09-22 23:06 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  52. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  53. 2026-09-22 11:28 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  54. 2026-09-21 23:49 UTCEG score recompute
  55. 2026-09-21 23:49 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  56. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  57. 2026-09-21 12:11 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  58. 2026-09-21 00:33 UTCEG score recompute
  59. 2026-09-21 00:33 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  60. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  61. 2026-09-20 12:54 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  62. 2026-09-20 01:13 UTCEG score recompute
  63. 2026-09-20 01:13 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  64. 2026-09-19 13:35 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  65. 2026-09-19 01:58 UTCEG score recompute
  66. 2026-09-19 01:57 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  67. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  68. 2026-09-18 14:20 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  69. 2026-09-18 02:24 UTCEG score recompute
  70. 2026-09-18 02:24 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  71. 2026-09-17 14:46 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  72. 2026-09-17 03:07 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  73. 2026-09-16 14:55 UTCEG score recompute
  74. 2026-09-16 14:55 UTCGHSA enrichmentGHSA-qw88-v783-w782 · GitHub severity CRITICAL · GitHub CVSS 8.7
  75. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 27th percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-82466?
CVE-2026-82466 is a high-severity vulnerability; its CVE record was published on August 29, 2026. Rodauth before 2.46.0 contains an authentication bypass vulnerability in the webauthn_login route that allows logged-in users to authenticate as any other account. Attackers can exploit improper account resolution logic that falls back to session account identifiers instead of validating the…
When was CVE-2026-82466 made public?
CVE-2026-82466 was made public on August 18, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 29, 2026. EchelonGraph's copy of the record carries a last-modified date of September 11, 2026; the record at its source may have been updated since.
Is CVE-2026-82466 actively exploited?
CVE-2026-82466 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82466?
CVE-2026-82466 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82466?
A fix for CVE-2026-82466 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-82466 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-82466

Explore →

Is Your Infrastructure Affected by CVE-2026-82466?

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

Book a Demo →Browse All CVEs