Apache Directory LDAP API: Unsafe loading of Java code from LDAP schema elements
Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API. A rogue/compromised LDAP server (or pre-TLS MITM) can answer a client's loadSchema() subschema search with a schema object that contains a serialized Java class, allowing some potential RCE. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.
CVE-2026-103877
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103877
Apache Directory LDAP API
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Apache Software Foundation",
"product": "Apache Directory LDAP API",
"versions": [
{
"status": "affected",
"version": "2.1.0",
"lessThan": "2.1.9",
"versionType": "semver"
}
],
"packageURL": "pkg:maven/org.apache.directory.api/api-ldap-schema-data",
"packageName": "org.apache.directory.api:api-ldap-schema-data",
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-103877
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #12325 · Revision 1
- Added to Heist Feed
- Publisher date