Critical
apache-directory-api — security advisory
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.
- Products
- apache-directory-api
- Affected versions
- 1.0.0-1, 1.0.0-2, 1.0.0~M20-3, 1.0.0~M20-5, 2.1.2-1, 2.1.2-2, 2.1.2-2build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-103877
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:58 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-103877
apache-directory-api
Fixed versions: Not specified
apache-directory-api
Fixed versions: Not specified
apache-directory-api
Fixed versions: Not specified
apache-directory-api
Fixed versions: Not specified
apache-directory-api
Fixed versions: Not specified
apache-directory-api
Fixed versions: Not specified
apache-directory-api
Fixed versions: Not specified
Complete source record
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"modified": "2026-10-17T12:57:58.814224622Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-103877",
"https://www.cve.org/CVERecord?id=CVE-2026-103877",
"https://www.openwall.com/lists/oss-security/2026/10/02/5",
"https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw"
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"source_id": "core-osv",
"document_id": 357806,
"published_at": "2026-10-02T10:17:00+00:00"
}