What is the CVSS score of CVE-2026-27023?

CVE-2026-27023 has a CVSS 3.1 base score of 5.0 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Twenty are affected by CVE-2026-27023?

Organizations using Twenty should be aware of moderate risk from CVE-2026-27023, a server-side request forgery vulnerability rated CVSS 5.0. Users could be tricked into performing unintended actions.

How to fix or mitigate CVE-2026-27023?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Twenty CVE-2026-27023

MEDIUM

Server-Side Request Forgery (SSRF) (CWE-918)

2026-03-05 security-advisories@github.com

SSRF Twenty

5.0

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.0 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 05, 2026 - 19:16 nvd

MEDIUM 5.0

DescriptionGitHub Advisory

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.

AnalysisAI

Twenty CRM versions prior to 1.18 allow authenticated users to bypass SSRF protections by exploiting unvalidated HTTP redirect targets, enabling access to private IP addresses through attacker-controlled intermediaries. An attacker with control over webhook endpoints or image URLs can leverage this vulnerability to reach restricted internal resources that would normally be blocked.

Technical ContextAI

Classified as CWE-918 (Server-Side Request Forgery (SSRF)). Affects Twenty. 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.