CVE-2026-64970 Stored XSS in ATutor
Attackers can inject JavaScript via registration fields to steal session cookies from other users viewing the profile.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-64970?
CVE-2026-64970 is a medium-severity cross-site scripting vulnerability in ATutor, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
ATutor is vulnerable to Stored Cross Site Scripting in registration functionality. An attacker can register a new account and enter a JavaScript payload in the phone field during registration. When any authenticated user visits the attacker's public profile, the profile template echoes the phone value without output encoding and the browser executes the payload leading to the theft of user's session cookie.
Product is no longer actively supported and the vulnerabilities have not been fixed. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.
Weakness: CWE-79
Which versions are affected by CVE-2026-64970?
How do I fix CVE-2026-64970?
No fix has been published for CVE-2026-64970 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-64970 being exploited?
There is no known exploitation of CVE-2026-64970 in the wild and no public exploit code.
Sources
Also known as GHSA-mpgc-c9hq-x24g.