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CVE-2026-66414— Leantime Open Redirect in Login Controller via redirectUrl Parameter

Quick assessment

Affected
Leantime Leantime
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Leantime是Leantime公司开源的一个面向非项目经理的以目标为中心的项目管理系统。 Leantime 3.6.2版本存在输入验证错误漏洞，该漏洞源于Login控制器存在开放重定向漏洞，允许未经身份验证的攻击者通过操纵redirectUrl POST参数绕过FILTER_SANITIZE_URL验证，将认证用户重定向到任意外部站点，可能导致钓鱼攻击或凭证窃取。

CVSS 6.1 · Medium EPSS 0.34% · P26

Possible ATT&CK Techniques 1 AI

T1566.001 · Spearphishing Attachment

Affected Version Matrix 1

VendorProduct Version RangeStatus
Leantime Leantime ≤ 3.6.2 affected
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I. Basic Information for CVE-2026-66414

Vulnerability Information
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Vulnerability Title
Leantime Open Redirect in Login Controller via redirectUrl Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
Leantime 3.6.2 contains an open redirect vulnerability in the Login controller that allows unauthenticated attackers to redirect authenticated users to arbitrary external sites by manipulating the redirectUrl POST parameter. Attackers can craft a malicious login URL with a tampered redirectUrl value that bypasses FILTER_SANITIZE_URL validation to redirect victims to attacker-controlled sites for phishing or credential theft.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Leantime 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Leantime是Leantime公司开源的一个面向非项目经理的以目标为中心的项目管理系统。 Leantime 3.6.2版本存在输入验证错误漏洞，该漏洞源于Login控制器存在开放重定向漏洞，允许未经身份验证的攻击者通过操纵redirectUrl POST参数绕过FILTER_SANITIZE_URL验证，将认证用户重定向到任意外部站点，可能导致钓鱼攻击或凭证窃取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Leantime Leantime 0 ~ 3.6.2 -

II. Public POCs for CVE-2026-66414

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III. Intelligence Information for CVE-2026-66414

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Patches & Fixes for CVE-2026-66414 (1)

Vendor Advisories for CVE-2026-66414 (1)

Proof of Concept for CVE-2026-66414 (1)

Other References for CVE-2026-66414 (1)

Same Patch Batch · Leantime · 2026-07-30 · 3 CVEs total

CVE-2026-66416 8.8 HIGH Leantime CSRF Protection Globally Disabled by Omission of Laravel VerifyCsrfToken Middlewa
CVE-2026-66415 8.5 HIGH Leantime Server-Side Request Forgery and Local File Inclusion in Blueprints::import()

IV. Related Vulnerabilities

Same product: Leantime
Same vendor: Leantime
Same weakness: CWE-601

V. Comments for CVE-2026-66414

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