Improper Authorization in Leantime Project Management System
CVE-2026-15510

5.3MEDIUM

Key Information:

Vendor

Leantime

Status
Leantime
Vendor
CVE Published:
12 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15510?

A vulnerability exists in the Leantime Project Management System versions up to 3.8.0, where the 'Setting::saveSetting' function in the API does not properly enforce authorization checks. This flaw allows remote attackers to exploit the vulnerability, potentially manipulating critical configurations without proper permissions. Despite contact with the vendor prior to the vulnerability being disclosed publicly, no response has been received. Given the nature of this issue, it is crucial for users to review their implementations and apply necessary security measures to safeguard their systems.

Affected Version(s)

Leantime 3.0

Leantime 3.1

Leantime 3.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-15510 - Proof of Concept

References

https://vuldb.com/vuln/377839
vdb-entrytechnical-description
https://vuldb.com/vuln/377839/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15510
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jobyer Ahmed (Bytium)
suffer (VulDB User)
suffer (VulDB User)
VulDB CNA Team
.