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.
Metrics
Affected Vendors & Products
References
History
Wed, 27 May 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:twenty:twenty:*:*:*:*:*:*:*:* |
Wed, 27 May 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 27 May 2026 09:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Twenty
Twenty twenty |
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| Vendors & Products |
Twenty
Twenty twenty |
Tue, 26 May 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Twenty: Stored Cross-Site Scripting via Unsanitized File Serving (Missing Content-Type/Content-Disposition Headers) | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-26T16:56:06.012Z
Updated: 2026-05-27T13:50:28.506Z
Reserved: 2026-05-07T18:04:17.309Z
Link: CVE-2026-44729
Updated: 2026-05-27T13:49:59.927Z
Status : Analyzed
Published: 2026-05-26T17:16:46.837
Modified: 2026-05-27T14:45:46.457
Link: CVE-2026-44729
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