CVE-2026-113682 json
Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password
published 20d ago modified 17d ago also EUVD-2026-105098
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- networknt light-4j 2.4.0
- github.com/networknt/light-4j@54743ba commit
- github.com/networknt/light-4j#2805 pull request
- github.com/networknt/light-4j/releases/tag/2.4.0 release
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 17d ago
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.1 | 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 |
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 9.1 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- networknt light-4j
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/networknt/light-4j/pull/2805
patch, issue-tracking
-
github.com
/networknt/light-4j/commit/54743badb34260b76ed131d8b6a4f60210cc3673
patch
-
github.com
/networknt/light-4j/issues/2804
issue-tracking
-
github.com
/networknt/light-4j/releases/tag/2.4.0
release-notes
-
github.com
/networknt/light-4j/blob/2.3.7/basic-auth/src/main/java/com/networknt/basicauth/BasicAuthHandler.java#L189-L20
technical-description
-
github.com
/networknt/light-4j/blob/2.3.7/ldap-util/src/main/java/com/networknt/ldap/LdapUtil.java#L152-L173
technical-description
-
vulncheck.com
/advisories/networknt-light-4j-2.1.5-before-2.4.0-authentication-bypass-via-empty-ldap-password
third-party-advisory
Sources
- CVE List CVE-2026-113682
- NVD CVE-2026-113682
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