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

Also known asEUVD-2026-68123 (ENISA EUVD) · GHSA-qw88-v783-w782 (GitHub Security Advisories)Source: ENISA EUVD

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 impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity87% × 45%
Impact severity (EG Severity): CVSS 8.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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
49th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.7): severity, escalated by confirmed exploitation. This CVE's 8.7 is its impact severity (EG Severity), not escalated.

EG Severity
8.7 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-08). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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.

The score's inputs: 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 8× in last 7d / 34× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 215 rows 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 115 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

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