2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Prior to 6.1.0, a blind SSRF vulnerability exists in 2FAuth that allows authenticated users to make arbitrary HTTP requests from the server to internal networks and cloud metadata endpoints. The image parameter in OTP URL is not properly validated for internal / private IP addresses before making HTTP requests. While the previous fix added response validation to ensure only valid images are stored but HTTP request is still made to arbitrary URLs before this validation occurs. This vulnerability is fixed in 6.1.0.
History

Fri, 13 Mar 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared 2fauth
2fauth 2fauth
CPEs cpe:2.3:a:2fauth:2fauth:*:*:*:*:*:*:*:*
Vendors & Products 2fauth
2fauth 2fauth
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Thu, 12 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 12 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Bubka
Bubka 2fauth
Vendors & Products Bubka
Bubka 2fauth

Wed, 11 Mar 2026 22:00:00 +0000

Type Values Removed Values Added
Description 2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Prior to 6.1.0, a blind SSRF vulnerability exists in 2FAuth that allows authenticated users to make arbitrary HTTP requests from the server to internal networks and cloud metadata endpoints. The image parameter in OTP URL is not properly validated for internal / private IP addresses before making HTTP requests. While the previous fix added response validation to ensure only valid images are stored but HTTP request is still made to arbitrary URLs before this validation occurs. This vulnerability is fixed in 6.1.0.
Title 2FAuth has Blind SSRF in image parameter allows internal network access and more
Weaknesses CWE-918
References
Metrics cvssV4_0

{'score': 7.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-11T21:45:09.034Z

Updated: 2026-03-12T16:17:42.667Z

Reserved: 2026-03-10T22:19:36.546Z

Link: CVE-2026-32133

cve-icon Vulnrichment

Updated: 2026-03-12T14:55:29.254Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-11T22:16:33.273

Modified: 2026-03-13T20:20:31.943

Link: CVE-2026-32133

cve-icon Redhat

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