Vulnerability · Published Sep 16, 2026 · Assigned by VulnCheck
CVE-2026-92772Leantime before 3.9.6 Unauthorized Plugin Installation via HTMX
High 7.1
In plain English
A high-severity missing authorization in leantime from Leantime. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.5%top 55.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Leantime before 3.9.6 contains an authorization bypass vulnerability in the HTMX plugin install endpoint that lacks permission validation. Authenticated users with limited roles can install marketplace plugins and control arbitrary properties including identifier, version, and license key to deploy malicious plugins.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
References
- GitHub Issue #3757 issue-tracking
- https://github.com/Leantime/leantime product
- install() carries no permission attribute technical-description
- the marketplace UI controller restricts to owner and admin technical-description
- buildMarketplacePluginFromRequest sets every supplied key with no allowlist technical-description
- 3.9.6 adds #[RequiresPermission(PluginsPermissions::MANAGE, global: true)] patch
- VulnCheck Advisory: Leantime before 3.9.6 Unauthorized Plugin Installation via HTMX third-party-advisory