SSRF in Twenty
CVE-2026-27023
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
Affected products
- Twenty
- Twentyhq Twenty — versions < 1.18
Weakness classification (CWE)
References
- github.com/twentyhq/twenty/security/advisories/GHSA-wm7q-rvq3-x8q9 (Mitigation, Vendor Advisory)
- github.com/twentyhq/twenty/releases/tag/v1.18.0 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-27023?
- CVE-2026-27023 is a medium-severity vulnerability in Twenty, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.0/10. Published 2026-03-05.
- How severe is CVE-2026-27023?
- Medium severity. CVSS v3 base score is 5.0 out of 10.