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Vulnerability record · CVE-2026-51956 · published 1 September 2026

CVE-2026-51956: Improper access control vulnerability

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.

8.1 CVSS 3.1 High EPSS 0.41% · top 67.1% CWE-284 · Improper access control Deferred
8.1CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
2 Sep 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

LinkTags
https://github.com/Grashjs/cmms
https://github.com/Grashjs/cmms/commit/283bbc985cda497d6b592faae45ae1dbc8d53966
https://github.com/h4vrut4/security-advisories/blob/main/CVE-2026-51956.md

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Source: NIST National Vulnerability Database (record CVE-2026-51956), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.