Medium severity6.5NVD Advisory· Published Jul 27, 2026· Updated Jul 28, 2026
CVE-2026-66412
CVE-2026-66412
Description
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.
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Affected products
1Patches
Vulnerability mechanics
References
4- github.com/Leantime/leantime/commit/68898eeb914882a21797523f2782914795bc67aenvd
- github.com/Leantime/leantime/pull/3657nvd
- github.com/Leantime/leantime/security/advisories/GHSA-wv69-xr82-phr6nvd
- www.vulncheck.com/advisories/leantime-all-versions-prior-to-and-broken-access-control-via-tickets-getmilestone-json-rpcnvd
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