CVE-2026-66416

Leantime CSRF Protection Globally Disabled by Omission of Laravel VerifyCsrfToken Middleware

Published Jul 30, 2026 CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed

Description

Leantime 3.6.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to perform state-changing actions on behalf of authenticated users by excluding the Laravel VerifyCsrfToken middleware from the global middleware stack in app/Http/Kernel.php. Attackers can craft malicious pages delivered via phishing emails or malicious websites to trigger unauthorized POST, PUT, and DELETE requests that create or delete projects, modify settings, and change permissions as any authenticated user.

Analysis

Technical impact

Leantime 3.6.2 lacks the Laravel VerifyCsrfToken middleware in its global middleware stack, creating a cross‑site request forgery flaw that enables attackers to execute POST, PUT, and DELETE actions without authentication. The vulnerability can be exploited to create or delete projects, alter settings, and modify user permissions as any authenticated user, representing a classic example of CWE‑352.

Affected Systems

The flaw affects installations of Leantime version 3.6.2. Any deployment running this version without the missing CSRF protection is exposed.

Risk and Exploitability

With a CVSS score of 8.6 the vulnerability is severe; the EPSS score is than 1% yet the lack of CSRF checks makes exploitation straightforward. Attackers can drive victims to malicious pages via phishing or compromised sites to submit unauthorized requests. The vulnerability is not currently listed in CISA KEV, yet the exposure is large enough that patching should be top priority.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Leantime

affected

Version	Status	Constraints
`0`	affected	≤ 3.6.2

No data.

Vendor Product Versions

Leantime

Version	Status	Scheme	Platform
`[0,3.6.2)`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade Leantime to a patched release that reinstates the VerifyCsrfToken middleware in the global stack.
Re‑enable Laravel's VerifyCsrfToken middleware for all routes that perform state‑changing operations, ensuring a CSRF token is required for each request.
Monitor for failed POST, PUT, and DELETE attempts and consider implementing rate limiting or a temporary CSRF validation middleware as an interim protection.

Generated by OpenCVE AI on August 3, 2026 at 10:38 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.256% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://github.com/Leantime/leantime
https://github.com/Leantime/leantime/pull/3659
https://github.com/javokhir-sec/CVE-PoC-Hub/security/advisories/GHSA-x8vx-9g5w-w5rr
https://www.vulncheck.com/advisories/leantime-csrf-protection-globally-disabled-by-omission-of-laravel-verifycsrftoken-middleware

History

Aug 14, 2026 5:15 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:leantime:leantime::::::::

Jul 31, 2026 11:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Jul 30, 2026 6:45 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Leantime Leantime leantime
Vendors & Products		Leantime Leantime leantime

Jul 30, 2026 5:30 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Leantime 3.6.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to perform state-changing actions on behalf of authenticated users by excluding the Laravel VerifyCsrfToken middleware from the global middleware stack in app/Http/Kernel.php. Attackers can craft malicious pages delivered via phishing emails or malicious websites to trigger unauthorized POST, PUT, and DELETE requests that create or delete projects, modify settings, and change permissions as any authenticated user.
Title		Leantime CSRF Protection Globally Disabled by Omission of Laravel VerifyCsrfToken Middleware
Weaknesses		CWE-352
References		https://github.com/Leantime/leantime https://github.com/Leantime/leantime/pull/3659 https://github.com/javokhir-sec/CVE-PoC-Hub/security/advisories/GHSA-x8vx-9g5w-w5rr https://www.vulncheck.com/advisories/leantime-csrf-protection-globally-disabled-by-omission-of-laravel-verifycsrftoken-middleware
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}` cvssV4_0 `{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`