CVE-2026-82042

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-02. A secondary CVSS source baseline 9.8; 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

Also known asEUVD-2026-91797 (ENISA EUVD) · GHSA-phx4-fx7q-vfw9 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint without path restriction, constant-time comparison, rate limiting, or audit logging. Attackers who obtain the key value can authenticate without a user account or JWT to create accounts, manage users, exfiltrate data, and modify security rules.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-02). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days 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 low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

October 2, 2026

Last Modified

October 6, 2026

Advisory Details (3)

Auto-updated Oct 28, 2026
Patch available. Sources: github_release, github_commit.
Web page

UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/utmstack-authentication-bypass-via-internalapikeyfilter
GitHub commit Patch Available

commit 4e7a727c3b8d (utmstack/UTMStack)

Patch available: utmstack/UTMStack v11.2.14 (contains commit 4e7a727c3b8d)

https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd
GitHub release Patch Available

v11.2.16

Patch available: UTMStack/UTMStack v11.2.16

https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16

Vendor Advisories for CVE-2026-82042(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 23× in last 7d / 141× 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 157 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 57 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 22:20 UTCEG score recompute
  2. 2026-11-02 22:19 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  3. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-11-01 21:34 UTCEG score recompute
  5. 2026-11-01 21:34 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  7. 2026-11-01 16:27 UTCEG score recompute
  8. 2026-11-01 16:27 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  10. 2026-10-31 15:50 UTCEG score recompute
  11. 2026-10-31 15:50 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  13. 2026-10-30 15:15 UTCEG score recompute
  14. 2026-10-30 15:15 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  16. 2026-10-29 14:41 UTCEG score recompute
  17. 2026-10-29 14:40 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  19. 2026-10-28 14:06 UTCEG score recompute
  20. 2026-10-28 14:06 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  22. 2026-10-27 13:14 UTCEG score recompute
  23. 2026-10-27 13:13 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  25. 2026-10-26 15:30 UTCEG score recompute
Show 75 more
  1. 2026-10-26 15:30 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  3. 2026-10-25 14:25 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-25 13:58 UTCEG score recompute
  5. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  6. 2026-10-24 13:50 UTCEG score recompute
  7. 2026-10-24 13:50 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  9. 2026-10-23 13:16 UTCEG score recompute
  10. 2026-10-23 13:15 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  12. 2026-10-22 12:37 UTCEG score recompute
  13. 2026-10-22 12:37 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-10-21 12:02 UTCEG score recompute
  16. 2026-10-21 12:02 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  18. 2026-10-20 11:27 UTCEG score recompute
  19. 2026-10-20 11:27 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  21. 2026-10-19 11:14 UTCEG score recompute
  22. 2026-10-19 11:14 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-10-18 08:28 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-18 03:08 UTCEG score recompute
  26. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  27. 2026-10-17 07:45 UTCEG score recompute
  28. 2026-10-17 07:44 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  29. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  30. 2026-10-16 07:09 UTCEG score recompute
  31. 2026-10-16 07:08 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  32. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  33. 2026-10-15 05:57 UTCEG score recompute
  34. 2026-10-15 05:57 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  36. 2026-10-14 01:35 UTCEG score recompute
  37. 2026-10-14 01:34 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  38. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  39. 2026-10-12 21:45 UTCEG score recompute
  40. 2026-10-12 21:45 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  41. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  42. 2026-10-12 14:56 UTCEG score recompute
  43. 2026-10-12 02:24 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  44. 2026-10-11 22:42 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  45. 2026-10-11 19:20 UTCEG score recompute
  46. 2026-10-11 19:01 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  47. 2026-10-11 16:36 UTCEG score recompute
  48. 2026-10-11 15:19 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  49. 2026-10-11 13:54 UTCEG score recompute
  50. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  51. 2026-10-11 11:38 UTCEG score recompute
  52. 2026-10-11 11:38 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-10-11 07:57 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  54. 2026-10-11 04:14 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  55. 2026-10-11 00:32 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  56. 2026-10-10 20:48 UTCEG score recompute
  57. 2026-10-10 20:48 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  58. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  59. 2026-10-10 17:07 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  60. 2026-10-10 13:26 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  61. 2026-10-10 09:44 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  62. 2026-10-10 06:04 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  63. 2026-10-10 02:22 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-10-09 22:41 UTCEG score recompute
  65. 2026-10-09 22:41 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  66. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  67. 2026-10-09 18:59 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  68. 2026-10-09 15:17 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  69. 2026-10-09 11:34 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  70. 2026-10-09 07:33 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  71. 2026-10-09 03:50 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  72. 2026-10-09 00:09 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  73. 2026-10-08 20:28 UTCEG score recompute
  74. 2026-10-08 20:28 UTCGHSA enrichmentGHSA-phx4-fx7q-vfw9 · GitHub severity CRITICAL · GitHub CVSS 9.8
  75. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 44th percentile

Frequently asked(5)

What is CVE-2026-82042?
CVE-2026-82042 is a critical-severity vulnerability; its CVE record was published on October 2, 2026. UTMStack before 11.2.16 contains an authentication bypass vulnerability that allows remote attackers to gain full administrative API access by presenting a valid Utm-Internal-Key header matching the INTERNAL_KEY environment variable value, which the InternalApiKeyFilter accepts for any endpoint…
When was CVE-2026-82042 made public?
CVE-2026-82042 was made public on August 31, 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 October 2, 2026. EchelonGraph's copy of the record carries a last-modified date of October 6, 2026; the record at its source may have been updated since.
Is CVE-2026-82042 actively exploited?
CVE-2026-82042 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82042?
CVE-2026-82042 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82042?
A fix for CVE-2026-82042 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-82042 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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