# CVE-2026-64970: ATutor stored cross-site scripting in user profile

Source: https://junglewise.ai/threats/cve-2026-64970-atutor-stored-cross-site-scripting-in-user-profile  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-64970 · Severity: info · CVSS 6.1 · Published 2026-08-20

ATutor is an open-source learning management system used to host online courses. A vulnerability in the user registration and profile display allows attackers to inject malicious JavaScript code via the phone field, which executes in the browsers of other users viewing the attacker's public profile. This enables theft of session cookies and account compromise for any authenticated user who views the attacker's profile.

Technologies: [ATutor](https://junglewise.ai/threats/technologies/atutor). Vendors: [ATutor](https://junglewise.ai/threats/vendors/atutor).

## Quick answers

**Is CVE-2026-64970 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-64970 being exploited in the wild.

**How severe is CVE-2026-64970?** Informational severity, with a CVSS score of 6.1, published 20 August 2026.

**Which products and versions are affected?** ATutor 2.2.4 (and possibly other versions).

**Is there a fix for CVE-2026-64970?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-64970 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-64970?** Check whether you run ATutor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a stored cross-site scripting (XSS) vulnerability in ATutor's registration and profile functionality. The vulnerability exists because user input from the phone field during registration is not properly output-encoded when the profile template displays it to other users. An unauthenticated attacker can register a new account and inject JavaScript code in the phone field; when any authenticated user visits the attacker's public profile page, the unencoded phone value is echoed into the HTML response, causing the browser to execute the injected payload. This allows the attacker to steal session cookies and hijack user accounts. The product is no longer actively maintained, and no patch is available.

## Affected products

- ATutor ATutor 2.2.4 (and possibly other versions)

## Timeline

- 2026-08-20: disclosed
- 2026-08-20: advisory

## References

- [https://atutor.github.io/](https://atutor.github.io/)
- [https://cert.pl/en/posts/2026/08/CVE-2026-64960](https://cert.pl/en/posts/2026/08/CVE-2026-64960)

## Related threats

- [ATutor reflected XSS in preview.php popup parameter](https://junglewise.ai/threats/cve-2026-64972-atutor-reflected-xss-in-preview-php-popup-parameter)
- [ATutor reflected XSS in restore functionality](https://junglewise.ai/threats/cve-2026-64971-atutor-reflected-xss-in-restore-functionality)
- [ATutor IDOR in profile picture endpoints](https://junglewise.ai/threats/cve-2026-64969-atutor-idor-in-profile-picture-endpoints)
- [ATutor server-side request forgery in import functionality](https://junglewise.ai/threats/cve-2026-64968-atutor-server-side-request-forgery-in-import-functionality)
- [ATutor path traversal in error log viewer](https://junglewise.ai/threats/cve-2026-64967-atutor-path-traversal-in-error-log-viewer)