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CVE-2026-127131

7.4, high

SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already…

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.4, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
12 Nov 2026yesterday

Description

SOGo before 5.12.13 contains a missing rate limiting vulnerability in its web login TOTP verification that allows attackers who already possess a victim's password to brute-force the second-factor code without triggering any lockout. Attackers can send repeated POST requests to /SOGo/connect with wrong verification codes at high speed since failed TOTP attempts never increment the failed-login counter and SOGoMaximumFailedLoginCount does not apply, enabling indefinite guessing across 30-second code windows to bypass two-factor authentication.

Details

Vendor
Alinto
Product
sogo
Weakness
CWE-307 (opens in a new tab)
Status
Deferred
Updated
12 Nov 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References 2

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Alinto CVEs

Every Alinto CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-127111 SOGo before 5.12.13 contains an improper restriction of excessive authentication attempts vulnerability that allows unauthenticated… 7.4, high

Beyond this page

Is CVE-2026-127131 in your network?

This page tells you how dangerous CVE-2026-127131 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 13 Nov 2026, not the live upstream state.