CVE-2026-15509
MEDIUMLeantime JSON-RPC Endpoint addUser improper authorization
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-377838 | Leantime JSON-RPC Endpoint addUser improper authorization
https://vuldb.com/vuln/377838
Signature, Permissions Required signature
permissions-required
VDB-377838 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/377838/cti
Third Party Advisory third-party-advisory
CVE-2026-15509 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-15509
Third Party Advisory third-party-advisory
Submit #846167 | Leantime Leantime project management system 3.8.0 Privilege Escalation / Improper Authorization
https://vuldb.com/submit/846167
Scores
CVSS v3
6.3
EPSS
0.0021
EPSS Percentile
10.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-266
CWE-285
Status
published
Products (9)
None/Leantime
3.0
None/Leantime
3.1
None/Leantime
3.2
None/Leantime
3.3
None/Leantime
3.4
None/Leantime
3.5
None/Leantime
3.6
None/Leantime
3.7
None/Leantime
3.8.0
Published
Jul 12, 2026
Tracked Since
Jul 13, 2026