CVE-2026-5750

Insecure direct object reference (IDOR) vulnerability in Fullstep

HIGH
7.6
CVSS Score
Published: April 22, 2026 at 01:25 PM UTC
Updated: June 17, 2026 at 10:59 AM UTC
1 product affected across 1 vendorFullstep

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Severity
HIGH7.6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

An insecure direct object reference (IDOR) vulnerability in the Fullstep V5 registration process allows authenticated users to access data belonging to other registered users through various vulnerable authenticated resources in the application. The vulnerable endpoints result from: '/api/suppliers/v1/suppliers//false' to list user information; and '/#/supplier-registration/supplier-registration//2' to update your user information (personal details, documents, etc.).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 5.30.07 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.6HIGHINCIBE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-639

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