CVE-2026-0636 | Legion of the Bouncy Castle BC-JAVA up to 1.83 LDAPStoreHelper.java ldap injection

VDB-357691 · CVE-2026-0636 · GCVE-0-2026-0636 LEGION OF THE BOUNCY CASTLE BC-JAVA UP TO 1.83 LDAPSTOREHELPER.JAVA LDAP INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $5k-$25k 3.39+ Summaryinfo A vulnerability was found in Legion of the Bouncy Castle BC-JAVA up to 1.83. It has been classified as critical. This issue affects some unknown processing of the file LDAPStoreHelper.java. This manipulation causes ldap injection. This vulnerability is handled as CVE-2026-0636. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended. Detailsinfo A vulnerability has been found in Legion of the Bouncy Castle BC-JAVA up to 1.83 and classified as critical. Affected by this vulnerability is an unknown code block of the file LDAPStoreHelper.java. The manipulation with an unknown input leads to a ldap injection vulnerability. The CWE definition for the vulnerability is CWE-90. The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: 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). LDAP Injection Vulnerability in LDAPStoreHelper.java This issue affects BC-JAVA: from 1.49 before 1.84. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-0636 since 01/06/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/15/2026). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK. Upgrading to version 1.84 eliminates this vulnerability. Productinfo Type Programming Language Software Vendor Legion of the Bouncy Castle Name BC-JAVA Version 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39 1.40 1.41 1.42 1.43 1.44 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 1.56 1.57 1.58 1.59 1.60 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.70 1.71 1.72 1.73 1.74 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 7.0 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Ldap injection CWE: CWE-90 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: BC-JAVA 1.84 Timelineinfo 01/06/2026 CVE reserved 04/15/2026 +98 days Advisory disclosed 04/15/2026 +0 days VulDB entry created 04/15/2026 +0 days VulDB entry last update Sourcesinfo Advisory: github.com Status: Confirmed CVE: CVE-2026-0636 (🔒) GCVE (CVE): GCVE-0-2026-0636 GCVE (VulDB): GCVE-100-357691 Entryinfo Created: 04/15/2026 11:48 Changes: 04/15/2026 11:48 (68) Complete: 🔍 Cache ID: 99:3DE:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸