CVE-2024-52598 2FAuth vulnerable to Server Side Request Forgery + URI validation bypass in 2fauth /api/v1/twofaccounts/preview
Attackers can exploit SSRF and URI validation bypass in 2FAuth to retrieve arbitrary internal resources via the preview endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-52598?
CVE-2024-52598 is a high-severity server-side request forgery vulnerability in Bubka 2FAuth, published on 20 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Two interconnected vulnerabilities exist in version 5.4.1 a SSRF and URI validation bypass issue. The endpoint at POST /api/v1/twofaccounts/preview allows setting a remote URI to retrieve the image of a 2fa site. By abusing this functionality, it is possible to force the application to make a GET request to an arbitrary URL, whose content will be stored in an image file in the server if it looks like an image. Additionally, the library does some basic validation on the URI, attempting to filter our URIs which do not have an image extension. However, this can be easily bypassed by appending the string `#.svg` to the URI. The combination of these two issues allows an attacker to retrieve URIs accessible from the application, as long as their content type is text based. If not, the request is still sent, but the response is not reflected to the attacker. Version 5.4.1 fixes the issues.
Which versions are affected by CVE-2024-52598?
It affects 1 product.
Products include 2fauth 2fauth.
How do I fix CVE-2024-52598?
No fix has been published for CVE-2024-52598 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2024-52598 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-52598 exists.
Other vulnerabilities in Bubka 2FAuth
- CVE-2026-32133 2FAuth has Blind SSRF in image parameter allows internal network access and more
- 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
- CVE-2023-36816 Cross-Site Scripting (XSS) at Account creation in 2FAuth
Sources
Also known as GHSA-xwxc-w7v3-2p4j.