CVE-2026-15509

Leantime JSON-RPC Endpoint addUser improper authorization

MEDIUM
6.3
CVSS Score
Published: July 12, 2026 at 10:30 PM UTC
Updated: July 15, 2026 at 04:16 PM UTC
1 product affected across 1 vendorLeantime

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

A vulnerability has been found in Leantime up to 3.8.0. This impacts the function editUser/addUser of the component JSON-RPC Endpoint. The manipulation of the argument role leads to improper authorization. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected

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

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/377838
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/377838/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-15509
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/846167

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-285CWE-266

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