CVE-2026-0636— LDAP Injection Vulnerability in LDAPStoreHelper.java
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I. Basic Information for CVE-2026-0636
Vulnerability Information
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Vulnerability Title
LDAP Injection Vulnerability in LDAPStoreHelper.java
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper neutralization of special elements used in an LDAP query ('LDAP injection') vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA bcprov on all (prov modules). This vulnerability is associated with program files LDAPStoreHelper. This issue affects BC-JAVA: from 1.74 before 1.84.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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
Bouncy Castle Java 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bouncy Castle Java是Legion of the Bouncy Castle Inc开源的一个加密算法程序。 Bouncy Castle Java 1.84之前版本存在安全漏洞，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 |
|---|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA | 1.74 ~ 1.84 | - |
II. Public POCs for CVE-2026-0636
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Legion of the Bouncy Castle Inc. · 2026-04-15 · 5 CVEs total
| CVE-2026-3505 | Unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion. | |
| CVE-2026-5588 | PKIX draft CompositeVerifier accepts empty signature sequence as valid. | |
| CVE-2026-5598 | Non-constant time comparisons risk private key leakage in FrodoKEM. | |
| CVE-2025-14813 | GOSTCTR implementation unable to process more than 255 blocks correctly |
IV. Related Vulnerabilities
Same product: BC-JAVA
Same vendor: Legion of the Bouncy Castle Inc.
- CVE-2026-8149
GCM chunking can lead to bad tag exception on decryption - CVE-2026-3505
Unbounded PGP AEAD chunk size leads to pre-auth resource exh - CVE-2026-5588
PKIX draft CompositeVerifier accepts empty signature sequenc - CVE-2026-5598
Non-constant time comparisons risk private key leakage in Fr - CVE-2025-14813
GOSTCTR implementation unable to process more than 255 block
Same weakness: CWE-90
- CVE-2026-40606
ProxyAuth Addon LDAP Injection in mitmproxy - CVE-2026-40459
LDAP Injection in PAC4J - CVE-2026-40193
Maddy Mail Server: LDAP Filter Injection via Unsanitized Use - CVE-2026-39962
LDAP injection in MISP ApacheAuthenticate when using a user- - CVE-2026-34578
OPNsense has an LDAP Injection via Unsanitized Username in A
V. Comments for CVE-2026-0636
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