CVE-2026-27023
Medium
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.
SeverityMedium
CVSS5.0
Exploit probability—
Product
Twenty
PublishedMar 5, 2026
First seenMar 5, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- twenty twenty1.18.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| twenty twenty | v < 1.18.0 | 1.18.0 |
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