# CVE-2026-64961: ATutor authentication bypass in auto-login token validation

Source: https://junglewise.ai/threats/cve-2026-64961-atutor-authentication-bypass-in-auto-login-token-validation  
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-2026-64961 · Severity: info · CVSS 9.1 · Published 2026-08-20

ATutor is a learning management system used by educational institutions to deliver online courses and manage student enrollment. An attacker who obtains a user's ID and registration date can bypass login authentication and gain immediate access to any account, including administrator accounts, without needing a password. This allows complete takeover of the platform and access to all course content and student data.

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

## Quick answers

**Is CVE-2026-64961 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-64961 being exploited in the wild.

**How severe is CVE-2026-64961?** Informational severity, with a CVSS score of 9.1, published 20 August 2026.

**Which products and versions are affected?** ATutor 2.2.4 and likely earlier versions.

**Is there a fix for CVE-2026-64961?** 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-2026-64961 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-64961?** 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

The vulnerability exists in ATutor's auto-login token validation functionality. Although token validation checks are performed, the values required to validate tokens remain uninitialized in certain code paths. An unauthenticated attacker who can enumerate a user's identifier and registration timestamp can generate a valid authentication token and authenticate as that user, including administrators, without knowing or entering a password. The vulnerability affects ATutor 2.2.4 and likely other versions; the product is no longer actively maintained and fixes are unavailable. The attack requires no special privileges or user interaction—only network access to the ATutor application and knowledge of target user identifiers and registration dates.

## Affected products

- ATutor ATutor 2.2.4 and likely earlier versions

## Timeline

- 2026-08-20: disclosed
- other: Product no longer actively supported; vulnerabilities remain unfixed

## 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)

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- [ATutor reflected XSS in restore functionality](https://junglewise.ai/threats/cve-2026-64971-atutor-reflected-xss-in-restore-functionality)
- [ATutor stored cross-site scripting in user profile](https://junglewise.ai/threats/cve-2026-64970-atutor-stored-cross-site-scripting-in-user-profile)
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- [ATutor server-side request forgery in import functionality](https://junglewise.ai/threats/cve-2026-64968-atutor-server-side-request-forgery-in-import-functionality)