CVE-2025-31478: zulip server

csirt@kutim:~/threat-intel/cve/CVE-2025-31478

CVSS 8.2 · High EPSS 0,36%

Kerentanan Improper Authentication pada zulip server. Skor CVSS 3.1 8.2 (High) menurut github.com.

Deskripsi (NVD)

Zulip is an open-source team collaboration tool. Zulip supports a configuration where account creation is limited solely by being able to authenticate with a single-sign on authentication backend, meaning the organization places no restrictions on email address domains or invitations being required to join, but has disabled the EmailAuthBackend that is used for email/password authentication. A bug in the Zulip server means that it is possible to create an account in such organizations, without having an account with the configured SSO authentication backend. This issue is patched in version 10.2. A workaround includes requiring invitations to join the organization prevents the vulnerability from being accessed.

Rincian

Terbit di NVD: 16 April 2025
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
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-287: Improper Authentication
EPSS (30 hari): 0,36% peluang dieksploitasi; lebih tinggi dari 27,3% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
zulip	zulip server	Semua versi sebelum 10.2

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.