Since SVG files can contain embedded JavaScript, an attacker can upload a malicious SVG that executes arbitrary JavaScript when viewed by other users, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens.
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://www.tenable.com/security/research/tra-2026-25 |
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Mon, 30 Mar 2026 08:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Langflow
Langflow langflow |
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| Vendors & Products |
Langflow
Langflow langflow |
Fri, 27 Mar 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 27 Mar 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The '/api/v1/files/images/{flow_id}/{file_name}' endpoint serves SVG files with the 'image/svg+xml' content type without sanitizing their content. Since SVG files can contain embedded JavaScript, an attacker can upload a malicious SVG that executes arbitrary JavaScript when viewed by other users, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens. | |
| Title | Langflow - Stored XSS via Malicious SVG Upload | |
| Weaknesses | CWE-79 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: tenable
Published:
Updated: 2026-03-27T15:35:23.336Z
Reserved: 2026-03-27T14:43:36.423Z
Link: CVE-2026-5026
Updated: 2026-03-27T15:35:15.446Z
Status : Awaiting Analysis
Published: 2026-03-27T15:17:04.597
Modified: 2026-03-30T13:26:29.793
Link: CVE-2026-5026
No data.
OpenCVE Enrichment
Updated: 2026-03-30T07:59:37Z