CVE-2026-4256— LDAP Injection in PEAKUP's PassGate
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| PEAKUP Technology Inc. | PassGate | ≤ 30042026 | affected |
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I. Basic Information for CVE-2026-4256
Vulnerability Information
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Vulnerability Title
LDAP Injection in PEAKUP's PassGate
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper neutralization of special elements used in an LDAP query ('LDAP injection') vulnerability in PEAKUP Technology Inc. PassGate allows LDAP Injection. This issue affects PassGate: through 30042026.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
LDAP查询中使用的特殊元素转义处理不恰当(LDAP注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
PEAKUP PassGate 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PEAKUP PassGate是PEAKUP公司的一款服务器设备的访问管理产品。 PEAKUP PassGate 30042026及之前版本存在输入验证错误漏洞，该漏洞源于LDAP查询中特殊元素中和不当，可能导致LDAP注入攻击。
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 |
|---|---|---|---|---|
| PEAKUP Technology Inc. | PassGate | 0 ~ 30042026 | - |
II. Public POCs for CVE-2026-4256
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-4256 (1)
- 🔗 T.C. Siber Güvenlik Başkanlığı - Güvenlik Bildirimleri Detaygovernment-resource
IV. Related Vulnerabilities
Same weakness: CWE-90
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LDAP Injection in HAVELSAN's Liman MYS - CVE-2026-49268
Apache Shiro: LDAP DN Injection in DefaultLdapRealm - CVE-2026-42568
Yamcs Vulnerable to LDAP Injection in LdapAuthModule - CVE-2026-45559
Roxy-WI: LDAP injection in /user/ldap/<username> (admin-only - CVE-2026-46745
Apache Airflow FAB provider: LDAP Filter Injection in FAB Au
V. Comments for CVE-2026-4256
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