A Broken Object Level Authorization vulnerability exists in Grashjs Atlas CMMS prior to v1.6.0.

published 2026-09-01 2mo ago modified 2026-09-02 2mo ago also EUVD-2026-69390

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits: 0; none known

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.

Patch / fix

links 1

github.com/Grashjs/cmms@283bbc9 commit

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2mo ago (2026-09-02)

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Classification

Weakness

CWE-284 Improper Access Control

References

Sources

CVE List CVE-2026-51956
NVD CVE-2026-51956

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