CVE-2023-36816 Cross-Site Scripting (XSS) at Account creation in 2FAuth
Attackers can inject malicious scripts via the account/service field in 2FAuth, potentially compromising user sessions and data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-36816?
CVE-2023-36816 is a medium-severity cross-site scripting vulnerability in Bubka 2FAuth, published on 3 Jul 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
2FA is a Web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Cross site scripting (XSS) injection can be done via the account/service field. This was tested in docker-compose environment. This vulnerability has been patched in version 4.0.3.
Weakness: CWE-79
Which versions are affected by CVE-2023-36816?
It affects 1 product.
Products include 2fauth 2fauth.
How do I fix CVE-2023-36816?
No fix has been published for CVE-2023-36816 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-2023-36816 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-36816 exists.
Other vulnerabilities in Bubka 2FAuth
- CVE-2026-32133 2FAuth has Blind SSRF in image parameter allows internal network access and more
- CVE-2024-52598 2FAuth vulnerable to Server Side Request Forgery + URI validation bypass in 2fauth /api/v1/twofaccounts/preview
- CVE-2025-45731 Race condition in n/a
- CVE-2024-52597 2FAuth vulnerable to stored cross-site scripting via SVG upload and direct access render
Sources
Also known as GHSA-cwhq-2mcq-pp9q.