CVE-2026-103877

CRITICALCVSS 9.8

Description

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.

Timeline

Published:October 2nd, 2026 10:17 AM

Last modified:October 7th, 2026 11:16 PM

CVSS Scoring

CVSS v3: 9.8 (CRITICAL)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-502

References & Reports

Advisories, patches, and third-party reports

https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw
http://www.openwall.com/lists/oss-security/2026/10/02/5

Source: NIST NVD · Data may lag official sources by up to one minute