Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-c3fc-8qff-9hwx
Advisory ID github_osv/GHSA-c3fc-8qff-9hwx
Aliases CVE-2026-0636
Summary Bouncy Castle has an LDAP injection 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.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-90 Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
System Score Found at
cvssv4 5.5 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-c3fc-8qff-9hwx/GHSA-c3fc-8qff-9hwx.json
generic_textual MODERATE
Reference id Reference type URL
https://github.com/bcgit/bc-java
https://nvd.nist.gov/vuln/detail/CVE-2026-0636
CVE%E2%80%902026%E2%80%900636 Advisory https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%900636
d20cdb8430e09224114fec0179a71859929fcbde Other https://github.com/bcgit/bc-java/commit/d20cdb8430e09224114fec0179a71859929fcbde
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/RE:M/U:Amber Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-c3fc-8qff-9hwx/GHSA-c3fc-8qff-9hwx.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-15T13:12:14Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/0xxx/CVE-2026-0636.json

Source Advisory: vulnrichment/CVE-2026-0636

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-15T13:12:14Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/0xxx/CVE-2026-0636.json

Source Advisory: vulnrichment/CVE-2026-0636

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]