Summaryinfo

A vulnerability classified as problematic was found in langflow-ai langflow. Affected by this issue is some unknown functionality of the file /api/v1/files/images/ of the component SVG File Handler. Such manipulation of the argument flow_id leads to cross site scripting. This vulnerability is listed as CVE-2026-5026. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in langflow-ai langflow (version unknown) and classified as problematic. Affected by this issue is an unknown function of the file /api/v1/files/images/ of the component SVG File Handler. The manipulation of the argument flow_id with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at tenable.com. This vulnerability is handled as CVE-2026-5026 since 03/27/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• langflow-ai

Name

• langflow

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CPE 2.2info

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