CVE-2026-33975

Twenty is an open source CRM built with NestJS (Node.js). In versions 1.18.0 and earlier, the SSRF protection in twenty-server's SecureHttpClientService can be bypassed using IPv4-mapped IPv6 addresses in URL IP literals. Node.js's URL parser normalizes IPv4-mapped IPv6 addresses to compressed hex form (e.g., ::ffff:169.254.169.254 becomes ::ffff:a9fe:a9fe), but the isPrivateIp utility only recognizes the dotted-decimal notation. As a result, the hex form passes the SSRF check unchecked. Additionally, the socket lookup validation event does not fire for IP literal addresses, bypassing the second validation layer. An authenticated user can reach any internal IP, including cloud metadata endpoints, to exfiltrate credentials such as IAM keys.

CVSS

No CVSS.

References

Link	Resource
https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m
https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m

Configurations

No configuration.

History

06 May 2026, 16:16

Type	Values Removed	Values Added
References	~~() https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m -~~	() https://github.com/twentyhq/twenty/security/advisories/GHSA-vrcj-hv2q-c58m -

05 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-05 20:16

Updated : 2026-05-06 16:16

NVD link : CVE-2026-33975

Mitre link : CVE-2026-33975

CVE.ORG link : CVE-2026-33975

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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