CVE-2026-15509

EUVD-2026-43250
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 25%
Common Weakness Enumeration
References
https://bytium.com/insights/leantime-priv-escalation-vulnerability-low-priv-to-owner
https://vuldb.com/cve/CVE-2026-15509
https://vuldb.com/submit/846167
https://vuldb.com/vuln/377838
https://vuldb.com/vuln/377838/cti