Leantime: Any Authenticated User Can Self-Escalate to Admin via Unauthorized JSON-RPC Methods

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-85990
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-13 17:17:47 UTC
Updated2026-10-16 23:17:02 UTC
DescriptionLeantime is an open source project management system. Prior to 3.10.0, for the provisionally grouped account-creation and plugin-management surfaces, Leantime's JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php exposes public API service methods, while PermissionEnforcer::enforce allows methods that lack a RequiresPermission attribute. A low-privilege authenticated user with an ordinary browser session can send the required X-Requested-With: XMLHttpRequest header and call leantime.rpc.api.api.createApiKeyWithProjects, which reaches Api::createApiKeyWithProjects, with an attacker-chosen role to create an interactive administrator account. The same missing per-method authorization exposes Plugins::installPlugin, Plugins::enablePlugin, Plugins::disablePlugin, and Plugins::removePlugin to ordinary authenticated users, permitting unauthorized plugin management. The complete provisionally grouped issue is fixed in version 3.10.0.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003280000 probability, percentile 0.243650000 (date 2026-10-16)

Problem Types: CWE-269 | CWE-862 | CWE-269 CWE-269: Improper Privilege Management | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Leantime Leantime affected < 3.10.0 Not specified

References

ReferenceSourceLinkTags
github.com/Leantime/leantime/releases/tag/v3.10.0 [email protected] github.com
github.com/Leantime/leantime/commit/5605e5ee86bbd01acb85c6b5d8fb337faf8b... [email protected] github.com
github.com/Leantime/leantime/pull/3583 [email protected] github.com
github.com/Leantime/leantime/pull/3797 [email protected] github.com
github.com/Leantime/leantime/security/advisories/GHSA-54mm-6729-r5wp 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/Leantime/leantime/commit/7ebf7a9517e2aaa05ec15b8130ab1841a4bd... [email protected] github.com
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