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CVE-2026-113682— Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password

Quick assessment

Affected
networknt light-4j
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.

Networknt light-4j 2.1.5 至 2.4.0（不含）版本中的 BasicAuthHandler 存在身份验证绕过漏洞。该漏洞允许未经身份验证的攻击者以 LDAP/AD 委派用户的身份登录。攻击者可发送包含已知用户名且密码为空的 Basic 授权头，从而触发未经身份验证的 LDAP 绑定操作，该操作会被错误地视为认证成功。

CVSS 7.4 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
networknt light-4j 2.1.5< 2.4.0 affected
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I. Basic Information for CVE-2026-113682

Vulnerability Information
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Vulnerability Title
Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password
Source: CVE Program / CVE List V5
Vulnerability Description
Networknt light-4j from 2.1.5 before 2.4.0 contains an authentication bypass vulnerability in BasicAuthHandler that allows unauthenticated attackers to log in as LDAP/AD-delegated users. Attackers can send a Basic Authorization header with a known username and empty password, triggering an unauthenticated LDAP bind that is accepted as successful authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
networknt light-4j 2.1.5 ~ 2.4.0 -

II. Public POCs for CVE-2026-113682

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-113682

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Patches & Fixes for CVE-2026-113682 (2)

Vendor Advisories for CVE-2026-113682 (1)

Proof of Concept for CVE-2026-113682 (1)

Vendor Pages for CVE-2026-113682 (1)

Other References for CVE-2026-113682 (1)

IV. Related Vulnerabilities

Same weakness: CWE-287

V. Comments for CVE-2026-113682

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