CVE-2026-66412: Leantime Leantime

Leantime all versions prior to and 3.6.2 Broken Access Control via tickets.getMilestone JSON-RPC

CVSS 7.1 HighEPSS 0.0042 · 36th percentile

Published by the CVE Program (CNA: VulnCheck) at 27 Jul 2026, 05:23 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Leantime	Leantime	affected 3.6.2 and earlier semver Other versions: affected

Identifiers

CVE-2026-66412

CNA

VulnCheck

Weakness (CWE)

CWE-639

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.1	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0042, the 36th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

27 Jul 2026, 05:23 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/Leantime/leantime/security/advisories/GHSA-wv69-xr82-phr6 vendor-advisory
github.com/Leantime/leantime/pull/3657 issue-trackingpatch
github.com/Leantime/leantime/commit/68898eeb914882a21797523f2782914795bc67ae patch
www.vulncheck.com/advisories/leantime-all-versions-prior-to-and-broken-access-control-via-tickets-getmilestone-json-rpc third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.