PT-2026-64852 · Leantime · Leantime

Javokhir Tursunboyev · CVE-2026-66412 · Published 2026-07-27 · Updated 2026-07-27

NVD

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Leantime 3.6.2 and prior contains a broken access control vulnerability that allows authenticated users to read milestone data from projects they are not assigned to by supplying arbitrary integer milestone IDs to the tickets.getMilestone JSON-RPC endpoint. Attackers can enumerate integer milestone IDs through the JSON-RPC API to access project planning information, milestone titles, descriptions, and timelines across all projects on the instance regardless of project membership.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-66412

Affected Products

Leantime

References · 5

• https://github.com/Leantime/leantime/commit/68898eeb914882a21797523f2782914795bc67ae · Patch
• https://github.com/Leantime/leantime/security/advisories/GHSA-wv69-xr82-phr6 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-66412 · Security Note
• https://github.com/Leantime/leantime/pull/3657 · Note
• https://vulncheck.com/advisories/leantime-all-versions-prior-to-and-broken-access-control-via-tickets-getmilestone-json-rpc · Note