Is CVE-2026-107145 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-107145 being exploited in the wild.

How severe is CVE-2026-107145?

Informational severity, published 27 October 2026.

Which products and versions are affected?

Alexandregz Twofactor Gauthenticator all before commit 4640889.

Is there a fix for CVE-2026-107145?

Yes: fixed in commit 4640889. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-107145 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-107145?

Check whether you run Alexandregz Twofactor Gauthenticator at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-107145: twofactor_gauthenticator plugin for Roundcube brute-force bypass

CVE-2026-107145 · Severity: info · Published 2026-10-27

The twofactor_gauthenticator plugin for Roundcube is an add-on that provides two-factor authentication using Google Authenticator codes to protect webmail accounts. Without rate limiting on authentication attempts, an attacker who knows a user's password can repeatedly guess the 6-digit second-factor code, potentially bypassing two-factor protection and gaining unauthorized access to email accounts.

Technologies: Alexandregz Twofactor Gauthenticator. Vendors: Alexandregz.

Quick answers

Is CVE-2026-107145 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-107145 being exploited in the wild.
How severe is CVE-2026-107145?: Informational severity, published 27 October 2026.
Which products and versions are affected?: Alexandregz Twofactor Gauthenticator all before commit 4640889.
Is there a fix for CVE-2026-107145?: Yes: fixed in commit 4640889. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-107145 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-107145?: Check whether you run Alexandregz Twofactor Gauthenticator at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: commit 4640889

Technical details

The vulnerability is a lack of rate limiting (CWE-307) in the second-factor authentication code validation mechanism. An authenticated attacker can submit arbitrary 6-digit codes without restriction, allowing brute-force attacks with reasonable probability of success within the typical time window a code is valid. Related vulnerabilities in the same plugin include session persistence after failed 2FA verification (CVE-2026-107146) and IP spoofing in 2FA bypass (CVE-2026-107147).

Affected products

alexandregz twofactor_gauthenticator all before commit 4640889

Timeline

2026-10-27: disclosed

References

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