CVE-2026-5842

HIGHNVD 7.37.3
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.3 under NVD CVSS v3. EPSS exploit probability: 0.5% (43rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this week
7.3EG
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: 7.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A security vulnerability has been detected in decolua 9router up to 0.3.47. The impacted element is an unknown function of the file /api of the component Administrative API Endpoint. The manipulation leads to authorization bypass. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 0.3.75 is sufficient to resolve this issue. It is suggested to upgrade the affected component.

CVSS v3
7.3
EG Score
7.3HIGHmedium confidence
EG Risk
48
EG Risk 48/100

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)
Severity73% × 45%
The EG Score, 7.3 of 10.
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 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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

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 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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

April 9, 2026

Last Modified

April 29, 2026

Advisory Details (5)

Auto-updated Jun 15, 2026
Patch available. Sources: github_release.
Web page

GitHub - deepcat1337/Free_Api_Exploit: A critical broken access control vulnerability exists in 9Router due to improper enforcement of authentication boundaries. While access control is applied to `/dashboard` routes via middleware, multiple sensitive `/api/*` endpoints lack server-side authentication and authorization checks. · GitHub

https://github.com/deepcat1337/Free_Api_Exploit/tree/main
GitHub release Patch Available

fix: Lossless passthrough for Claude CLI, Codex & correct thought signatures version 0.3.75

Patch available: decolua/9router v0.3.75

https://github.com/decolua/9router/releases/tag/v0.3.75
Web page

Missing Authentication on Administrative API Endpoints Leads to Full System Compromise in 9Router · Issue #431 · decolua/9router · GitHub

https://github.com/decolua/9router/issues/431#issuecomment-4140163867
Web page

Missing Authentication on Administrative API Endpoints Leads to Full System Compromise in 9Router · Issue #431 · decolua/9router · GitHub

https://github.com/decolua/9router/issues/431
Web page

GitHub - decolua/9router: Unlimited FREE AI coding. Connect Claude Code, Codex, Cursor, Cline, Copilot, Antigravity to FREE Claude/GPT/Gemini via 40+ providers. Auto-fallback, RTK -40% tokens, never hit limits. · GitHub

https://github.com/decolua/9router/

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
9router—
  • every version up to 0.3.75: fixed in 0.3.75
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 27× 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 93 of 172 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. 7 repeat rows among the latest 100 are merged into the row they repeat. The 79 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:36 UTCEG score recompute
  2. 2026-10-11 16:52 UTCEG score recompute
  3. 2026-10-11 14:14 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-10-10 21:23 UTCOSV refresh
  6. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  7. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  9. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  10. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  15. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  20. 2026-09-21 09:19 UTCOSV refresh
  21. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  22. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  23. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  24. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
Show 68 more
  1. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  3. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  4. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  5. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  6. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  7. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-09-02 07:44 UTCOSV refresh
  10. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  11. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  12. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  13. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  14. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  15. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  17. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  18. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  19. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  20. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  21. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  22. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  24. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  25. 2026-08-16 07:14 UTCEG score recompute
  26. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  27. 2026-08-14 05:10 UTCEG score recompute
  28. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  29. 2026-08-12 19:26 UTCEG score recompute
  30. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  31. 2026-08-11 19:43 UTCEG score recompute
  32. 2026-08-11 03:03 UTCEG score recompute
  33. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  34. 2026-08-09 17:49 UTCEG score recompute
  35. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  36. 2026-08-09 04:37 UTCEG score recompute
  37. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  38. 2026-08-08 03:44 UTCEG score recompute
  39. 2026-08-07 14:32 UTCEG score recompute
  40. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  41. 2026-08-05 23:47 UTCEG score recompute
  42. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  43. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  44. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  45. 2026-08-03 22:01 UTCEG score recompute
  46. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  47. 2026-08-02 13:58 UTCEG score recompute
  48. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  49. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  50. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  51. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  52. 2026-07-28 15:37 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  53. 2026-07-27 14:14 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  54. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  55. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  56. 2026-07-24 14:18 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  57. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  58. 2026-07-23 03:21 UTCEG score recompute
  59. 2026-07-22 14:08 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  60. 2026-07-21 15:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  61. 2026-07-20 20:32 UTCOSV refresh
  62. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  63. 2026-07-19 14:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  64. 2026-07-19 02:29 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  65. 2026-07-18 10:04 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  66. 2026-07-16 17:03 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  67. 2026-07-15 16:57 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  68. 2026-07-15 02:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-5842?
CVE-2026-5842 is a high-severity vulnerability; its CVE record was published on April 9, 2026. A security vulnerability has been detected in decolua 9router up to 0.3.47. The impacted element is an unknown function of the file /api of the component Administrative API Endpoint. The manipulation leads to authorization bypass. The attack is possible to be carried out remotely. The exploit has…
When was the CVE record for CVE-2026-5842 published?
The CVE record for CVE-2026-5842 was published on April 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 29, 2026; the record at its source may have been updated since.
Is CVE-2026-5842 actively exploited?
CVE-2026-5842 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-5842?
CVE-2026-5842 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-5842?
A fix for CVE-2026-5842 is available: update to the fixed version the vendor names in its advisory.

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