CVE-2026-27023 Twenty: SSRF protection bypass via HTTP redirect following in secure HTTP client
Authenticated attackers can bypass SSRF protections in Twenty CRM by exploiting unvalidated HTTP redirects, potentially accessing internal network resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-27023?
CVE-2026-27023 is a medium-severity server-side request forgery vulnerability in twentyhq twenty, published on 5 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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: CWE-918
Which versions are affected by CVE-2026-27023?
It affects 1 product.
Products include Twenty Twenty.
How do I fix CVE-2026-27023?
No fix has been published for CVE-2026-27023 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-27023 being exploited?
There is no known exploitation of CVE-2026-27023 in the wild and no public exploit code.
Other vulnerabilities in twentyhq twenty
- CVE-2026-46624 Twenty: SQL Injection via the timeZone field
- CVE-2026-26720 Code injection in n/a
- CVE-2026-44729 Twenty: Stored Cross-Site Scripting via Unsanitized File Serving (Missing Content-Type/Content-Disposition Headers)
- CVE-2024-28434 Cross-site scripting in n/a
- CVE-2024-28435 Server-side request forgery in n/a
Sources
Also known as GHSA-wm7q-rvq3-x8q9.