VULNERABILITY INTELLIGENCE

CVE-2026-27023

CVSS score5 MEDIUM
EPSS probability0.23%
CISA KEVNot currently listed
Published2026-03-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Description

Twenty is an open source CRM. Prior to version 1.18, the SSRF protection in SecureHttpClientService validated request URLs at the request level but did not validate redirect targets. An authenticated user who could control outbound request URLs (e.g., webhook endpoints, image URLs) could bypass private IP blocking by redirecting through an attacker-controlled server. This issue has been patched in version 1.18.

Weakness classification

  • security-advisories@github.com: CWE-918

Primary references