CVE-2026-39416
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Stored XSS in AIL Framework Modal Preview Allows Script Execution

Publication date: 2026-04-08

Last updated on: 2026-04-15

Assigner: GitHub, Inc.

Description
AIL framework is an open-source platform to collect, crawl, process and analyse unstructured data. Prior to 6.8, a stored cross-site scripting (XSS) vulnerability was identified in the modal item preview functionality. When item content longer than 800 characters was processed, attacker-controlled content was returned without an explicit text/plain content type, allowing the browser to interpret the response as active HTML. This could result in execution of arbitrary JavaScript in the context of an authenticated user viewing a crafted item. This vulnerability is fixed in 6.8.
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Meta Information
Published
2026-04-08
Last Modified
2026-04-15
Generated
2026-06-16
AI Q&A
2026-04-09
EPSS Evaluated
2026-06-14
NVD
CVE-2026-39416
EUVD
EUVD-2026-20605
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
circl ail_framework to 6.7 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
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.
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Executive Summary

This vulnerability is a stored cross-site scripting (XSS) issue found in the AIL framework before version 6.8. It occurs in the modal item preview functionality when processing item content longer than 800 characters. The problem arises because attacker-controlled content is returned without specifying a text/plain content type, causing the browser to interpret the response as active HTML. This allows an attacker to execute arbitrary JavaScript in the context of an authenticated user viewing the crafted item.

Impact Analysis

The vulnerability can lead to the execution of arbitrary JavaScript code within the browser of an authenticated user. This can result in unauthorized actions performed on behalf of the user, data theft, session hijacking, or other malicious activities that compromise the security and integrity of the user's session and data.

Mitigation Strategies

The vulnerability is fixed in version 6.8 of the AIL framework. Immediate mitigation involves upgrading the AIL framework to version 6.8 or later.

Until the upgrade can be performed, avoid processing or viewing item content longer than 800 characters in the modal item preview functionality, as this is where the stored XSS vulnerability occurs.

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