CVE-2026-34578

Katalog CVE

CVSS 8.2 · High EPSS 0,48%

Kerentanan Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') pada opnsense. Skor CVSS 3.1 8.2 (High) menurut github.com.

Deskripsi (NVD)

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication connector passes the login username directly into an LDAP search filter without calling ldap_escape(). An unauthenticated attacker can inject LDAP filter metacharacters into the username field of the WebGUI login page to enumerate valid LDAP usernames in the configured directory. When the LDAP server configuration includes an Extended Query to restrict login to members of a specific group, the same injection can be used to bypass that group membership restriction and authenticate as any LDAP user whose password is known, regardless of group membership. This vulnerability is fixed in 26.1.6.

Rincian

Terbit di NVD

9 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

8.2 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

EPSS (30 hari)

0,48% peluang dieksploitasi; lebih tinggi dari 39,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/opnsense/core/security/advisories/GHSA-jpm7-f59c-mp54 exploit · mitigasi · advisory vendor
• https://github.com/opnsense/core/commit/016f66cb4620cd48183fa97843f343bb71813c6e patch