CVE-2026-75627: Bastillion 0 through 5.1.0

CVE-2026-75627. CVSS 3.1 base score 9.8 (CRITICAL, Vendor/CNA). EPSS 0.00844 (percentile 0.57507), scored 21-Oct-2026.

Affected technology

Bastillion · 0 through 5.1.0
bastillion-io

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Unauthenticated attackers can bypass authentication filters by prefixing requests with arbitrary path segments. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality, integrity and availability impact as high.

Published 23-Oct-2026 06:11 UTC

CWE: CWE-288
CCR priority: 39.4 /100 (P4)
CVSS 3.1: 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.00844 · percentile 0.57556 · 2026-10-22
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-23 06:11:59.600832+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-23 06:11:01.814928+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-75627.html