CVE-2026-51956

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
8.1EG
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: 0.4%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A Broken Object Level Authorization vulnerability exists in Grashjs Atlas CMMS prior to v1.6.0. An authenticated user from one tenant can read and modify another tenant's company record by changing only the numeric ID in the /company/{id} endpoint. The application does not enforce tenant-level ownership checks when accessing or updating company objects, allowing cross-tenant access and modification of company profile data.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity81% × 45%
The EG Score, 8.1 of 10.
Exploitation0.4% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 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 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

September 1, 2026

Last Modified

September 2, 2026

Advisory Details (3)

Auto-updated Sep 2, 2026
Patch available. Sources: github_commit.
Web page

security-advisories/CVE-2026-51956.md at main · h4vrut4/security-advisories · GitHub

https://github.com/h4vrut4/security-advisories/blob/main/CVE-2026-51956.md
GitHub commit Patch Available

commit 283bbc985cda (Grashjs/cmms)

Patch available: Grashjs/cmms v1.6.0 (contains commit 283bbc985cda)

https://github.com/Grashjs/cmms/commit/283bbc985cda497d6b592faae45ae1dbc8d53966
Web page

GitHub - Grashjs/cmms: #1 Self hosted CMMS web & mobile application that allows you to manage enterprise maintenance for free - Computerized Maintenance Management System · GitHub

https://github.com/Grashjs/cmms

Vendor Advisories for CVE-2026-51956(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 19× in last 7d / 101× 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 99 of 148 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 49 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-12 15:58 UTCEG score recompute
  5. 2026-10-11 19:41 UTCEG score recompute
  6. 2026-10-11 16:56 UTCEG score recompute
  7. 2026-10-11 14:20 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-10 12:19 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  11. 2026-10-10 00:25 UTCEG score recompute
  12. 2026-10-10 00:25 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-09 02:14 UTCEG score recompute
  15. 2026-10-09 02:14 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  16. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-08 00:25 UTCEG score recompute
  18. 2026-10-08 00:24 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-10-07 01:28 UTCEG score recompute
  21. 2026-10-07 01:28 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  22. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-10-06 13:33 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  24. 2026-10-06 01:37 UTCEG score recompute
  25. 2026-10-06 01:37 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
Show 74 more
  1. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-05 13:27 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  3. 2026-10-05 01:16 UTCEG score recompute
  4. 2026-10-05 01:16 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  5. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-04 13:21 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  7. 2026-10-04 01:19 UTCEG score recompute
  8. 2026-10-04 01:19 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  9. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-03 13:21 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  11. 2026-10-02 19:34 UTCEG score recompute
  12. 2026-10-02 19:34 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-02 07:39 UTCEG score recompute
  15. 2026-10-02 07:38 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-01 19:43 UTCEG score recompute
  18. 2026-10-01 19:43 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  19. 2026-10-01 07:35 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  20. 2026-09-30 19:40 UTCEG score recompute
  21. 2026-09-30 19:40 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-09-30 03:32 UTCEG score recompute
  24. 2026-09-30 03:32 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  25. 2026-09-29 08:55 UTCEG score recompute
  26. 2026-09-29 08:55 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  27. 2026-09-28 21:00 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  28. 2026-09-28 07:03 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  29. 2026-09-27 19:08 UTCEG score recompute
  30. 2026-09-27 19:08 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  31. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-09-27 07:13 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  33. 2026-09-26 19:17 UTCEG score recompute
  34. 2026-09-26 19:17 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  35. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  36. 2026-09-26 07:07 UTCEG score recompute
  37. 2026-09-26 07:07 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  38. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  39. 2026-09-25 11:20 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  40. 2026-09-24 23:21 UTCEG score recompute
  41. 2026-09-24 23:21 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  42. 2026-09-24 11:24 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  43. 2026-09-23 23:29 UTCEG score recompute
  44. 2026-09-23 23:29 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  45. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  46. 2026-09-23 11:34 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  47. 2026-09-22 23:38 UTCEG score recompute
  48. 2026-09-22 23:38 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  49. 2026-09-22 11:37 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  50. 2026-09-21 23:41 UTCEG score recompute
  51. 2026-09-21 23:41 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  52. 2026-09-21 11:46 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  53. 2026-09-20 23:51 UTCEG score recompute
  54. 2026-09-20 23:51 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  55. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-09-20 11:56 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  57. 2026-09-19 23:38 UTCEG score recompute
  58. 2026-09-19 23:38 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  59. 2026-09-19 11:43 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  60. 2026-09-18 23:48 UTCEG score recompute
  61. 2026-09-18 23:48 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  62. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  63. 2026-09-18 11:53 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  64. 2026-09-17 23:58 UTCEG score recompute
  65. 2026-09-17 23:58 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  66. 2026-09-17 11:17 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  67. 2026-09-16 23:22 UTCEG score recompute
  68. 2026-09-16 23:22 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  69. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  70. 2026-09-16 11:27 UTCEG score recompute
  71. 2026-09-16 11:27 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  72. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  73. 2026-09-15 23:26 UTCGHSA enrichmentGHSA-6cjx-9x4p-x26w · GitHub severity HIGH · GitHub CVSS 8.1
  74. 2026-09-15 11:31 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-51956?
CVE-2026-51956 is a high-severity vulnerability; its CVE record was published on September 1, 2026. A Broken Object Level Authorization vulnerability exists in Grashjs Atlas CMMS prior to v1.6.0. An authenticated user from one tenant can read and modify another tenant's company record by changing only the numeric ID in the /company/{id} endpoint. The application does not enforce tenant-level…
When was the CVE record for CVE-2026-51956 published?
The CVE record for CVE-2026-51956 was published on September 1, 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 September 2, 2026; the record at its source may have been updated since.
Is CVE-2026-51956 actively exploited?
CVE-2026-51956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-51956?
CVE-2026-51956 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51956?
A fix for CVE-2026-51956 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-51956 are linked in the Vendor Advisories panel on this page.

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