Vulnerability Description
Twenty is an open source CRM. In 1.18.0 and earlier, the file serving endpoints in Twenty CRM at /files/* and /file/:fileFolder/:id serve uploaded files using fileStream.pipe(res) without setting any Content-Type, Content-Disposition, or X-Content-Type-Options response headers. This allows an authenticated attacker to upload an HTML file containing JavaScript, which will be rendered by the victim's browser in the context of the Twenty CRM domain when accessed — enabling session hijacking, account takeover, and data theft.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Twenty | Twenty | <= 1.18.0 |
Related Weaknesses (CWE)
References
- https://github.com/twentyhq/twenty/security/advisories/GHSA-f5h2-3qw5-3qp7ExploitMitigationVendor Advisory
- https://github.com/twentyhq/twenty/security/advisories/GHSA-f5h2-3qw5-3qp7ExploitMitigationVendor Advisory
FAQ
What is CVE-2026-44729?
CVE-2026-44729 is a vulnerability with a CVSS score of 8.7 (HIGH). Twenty is an open source CRM. In 1.18.0 and earlier, the file serving endpoints in Twenty CRM at /files/* and /file/:fileFolder/:id serve uploaded files using fileStream.pipe(res) without setting any ...
How severe is CVE-2026-44729?
CVE-2026-44729 has been rated HIGH with a CVSS base score of 8.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44729?
Check the references section above for vendor advisories and patch information. Affected products include: Twenty Twenty.