CVE-2026-103878CWE-345

CVE-2026-103878

High · published October 2, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
11.1
In the wild
Unconfirmed
What it is

Cleartext transmission of sensitive information vulnerability in Apache Directory LDAP API.

A StartTLS extended operation started after a Search request has been sent can lead to receive data in plain text before the TLS Handshake has been completed.

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00213 · 11.1th percentile
Weakness
CWE-345 · Insufficient Verification of Data Authenticity
Published
2026-10-02T14:17Z
References (2)
https://lists.apache.org/thread.html/d98f9w01nd3zmkwrr21y0l9kdr9jpty9 · [email protected]http://www.openwall.com/lists/oss-security/2026/10/02/6 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 04 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 02 OCT 10:02Z
    Apache Directory LDAP API: Injection of plaintext responses during StartTLS
    cvelistv5