How severe is CVE-2026-32133?

CVE-2026-32133 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-32133 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32133?

CVE-2026-32133 affects 2fauth. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32133?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-32133 have an EU (EUVD) identifier?

Yes. CVE-2026-32133 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11414.

When was CVE-2026-32133 published?

CVE-2026-32133 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-32133

CVE-2026-32133 is a critical-severity vulnerability in 2fauth with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 7.8
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11414
Weakness: CWE-918
Affected product: 2fauth
Published: 2026-03-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-32133?: 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.
How severe is CVE-2026-32133?: CVE-2026-32133 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-32133 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32133?: CVE-2026-32133 affects 2fauth. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32133?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-32133 have an EU (EUVD) identifier?: Yes. CVE-2026-32133 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11414.
When was CVE-2026-32133 published?: CVE-2026-32133 was published on 2026-03-11 and last updated on 2026-06-17.

References

https://github.com/Bubka/2FAuth/security/advisories/GHSA-8qp3-x2mp-j6f8

Affected products (1)

cpe:2.3:a:2fauth:2fauth:*:*:*:*:*:*:*:*

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