CVE-2026-127111 SOGo before 5.12.13 Unauthenticated Password Recovery Brute Force

9.1 criticalEPSS 0.3%

Critical (9.1) in alinto sogo. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

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Severity
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Affected
Versions
Linux distributions
Attack patterns (CAPEC)
History
References
Your exposure

SOGo before 5.12.13 contains an improper restriction of excessive authentication attempts vulnerability that allows unauthenticated attackers to reset account passwords by repeatedly guessing secret-question answers via the passwordRecoveryCheck endpoint without lockout or rate limiting. Attackers can submit unlimited candidate answers to obtain a valid recovery JWT, then use it to change the account password without the old credential and log in via the connect endpoint, achieving full account takeover on accounts without TOTP enabled.

Severity

CVSS 4.0

9.1 critical

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.4 high

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

EPSS: 0.3% estimated probability of exploitation activity in the next 30 days; 26th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC): Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE: CWE-307 Improper Restriction of Excessive Authentication Attempts
OWASP Top 10: A07:2025 Authentication Failures
Published: 2026-11-12 16:19 UTC
Modified: 2026-11-13 19:19 UTC
Assigned by: VulnCheck (CNA)
NVD analysis: Deferred: the NVD does not plan to analyze it
Record from: the NVD, synced 2026-11-13 19:41 UTC

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Affected

alinto:sogo

Versions

From the CNA's record in the CVE List.

Product	Affected
Alinto sogo	before 5.12.13

Linux distributions

Distribution	Release	Package	Fixed in	Advisory
Debian	12, 13	sogo	no fix listed	DEBIAN-CVE-2026-127111
Ubuntu	26.10, Pro:16.04:LTS, Pro:18.04:LTS and 3 more	sogo	no fix listed	UBUNTU-CVE-2026-127111

From the distributions' data via OSV.dev: the Debian Security Tracker; Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Debian · Ubuntu.

Attack patterns (CAPEC)

CAPEC-16 Dictionary-based Password Attack Likelihood: Medium · Severity: High
CAPEC-49 Password Brute Forcing Likelihood: Medium · Severity: High
CAPEC-560 Use of Known Domain Credentials Likelihood: High · Severity: High
CAPEC-565 Password Spraying Likelihood: High · Severity: High
CAPEC-600 Credential Stuffing Likelihood: High · Severity: High
CAPEC-652 Use of Known Kerberos Credentials Likelihood: Medium · Severity: High
CAPEC-653 Use of Known Operating System Credentials Likelihood: High · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

History

2026-11-12 The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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