Vulnerability details
CVE-2026-113682
networknt light-4j
Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password
CVSS 4.0
9.1Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.1Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| 7.4High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| networknt | light-4j | 2.1.5 ≤ v < 2.4.0 | CVEProject cvelistV5 (CNA) |
References and advisories
7- https://github.com/networknt/light-4j/issues/2804 issue-tracking
- https://github.com/networknt/light-4j/pull/2805 patchissue-tracking
- https://github.com/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673 patch
- https://github.com/networknt/light-4j/releases/tag/2.4.0 release-notes
- https://github.com/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L200 technical-description
- https://github.com/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173 technical-description
- https://www.vulncheck.com/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password third-party-advisory
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-10-20
- Last updated
- 2026-10-23
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 26 · Low
Exploit prediction (EPSS)
0.56%
Probability of exploitation in 30 days
47%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-287Improper Authentication