CVE-2026-15509CWE-266CWE-285

Leantime JSON-RPC Endpoint addUser improper authorization

Medium · published July 12, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
27.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00347 · 27.1th percentile
Weaknesses
CWE-266 · Incorrect Privilege Assignment; CWE-285 · Improper Authorization
Published
2026-07-12T22:30Z
EPSS history
Timeline
  • 12 JUL 22:30Z
    Leantime JSON-RPC Endpoint addUser improper authorization
    cvelistv5