Is CVE-2026-127131 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-127131 being exploited in the wild.

How severe is CVE-2026-127131?

High severity, with a CVSS score of 7.4, published 12 November 2026.

Is there a fix for CVE-2026-127131?

Yes: fixed in 5.12.13. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-127131 attacked?

It is attacked over the network.

Am I affected by CVE-2026-127131?

Check whether you run Alinto Sogo 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-2026-127131: SOGo missing rate limiting in TOTP verification

CVE-2026-127131 · Severity: high · CVSS 7.4 · Published 2026-11-12

SOGo is a groupware suite providing email, calendar, and messaging services for organizations. A missing rate-limiting vulnerability in two-factor authentication allows attackers who already know a user's password to rapidly brute-force the TOTP code and gain account access without triggering account lockout protections. This completely undermines two-factor authentication on affected systems.

Technologies: Alinto Sogo. Vendors: Alinto.

Quick answers

Is CVE-2026-127131 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-127131 being exploited in the wild.
How severe is CVE-2026-127131?: High severity, with a CVSS score of 7.4, published 12 November 2026.
Which products and versions are affected?: Alinto Sogo before 5.12.13.
Is there a fix for CVE-2026-127131?: Yes: fixed in 5.12.13. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-127131 attacked?: It is attacked over the network.
Am I affected by CVE-2026-127131?: Check whether you run Alinto Sogo 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: 5.12.13

Technical details

The vulnerability exists in the /SOGo/connect login endpoint where failed TOTP verification attempts do not increment the failed-login counter, causing SOGoMaximumFailedLoginCount policy to never apply. An unauthenticated attacker with a valid password can send unlimited POST requests with varying TOTP codes across 30-second code windows, enabling practical brute-force attacks against the second factor. The issue is fixed in SOGo 5.12.13.

Affected products

Alinto SOGo before 5.12.13

Timeline

2026-11-12: disclosed
2026-11-04: patched: SOGo 5.12.13 released

References

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