A vulnerability has been found in Umami 3.3.x/3.4.0/3.4.1. This affects an unknown part of the file src/app/api/auth/login/route.ts of the component 2FA Policy Handler. The manipulation leads to use of single-factor authentication. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a Umami affected
Version Status Constraints
3.3.* affected —
3.4.0 affected —
3.4.1 affected —

No data.

No data.

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Project Subscriptions

Vendors Products
Umami Subscribe
Umami Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/umami-software/umami/security/advisories/GHSA-29fx-pxjg-35rm cve-icon cve-icon
https://github.com/waterhunter2000-svg/vulnerability-reports cve-icon cve-icon
https://github.com/waterhunter2000-svg/vulnerability-reports/blob/main/03-umami-enforced-2fa-not-applied.md cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-121531 cve-icon cve-icon
https://vuldb.com/submit/1019994 cve-icon cve-icon
https://vuldb.com/vuln/430290 cve-icon cve-icon
https://vuldb.com/vuln/430290/cti cve-icon cve-icon
History

Tue, 03 Nov 2026 22:00:00 +0000

Type Values Removed Values Added
Description A vulnerability has been found in Umami 3.3.x/3.4.0/3.4.1. This affects an unknown part of the file src/app/api/auth/login/route.ts of the component 2FA Policy Handler. The manipulation leads to use of single-factor authentication. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Title Umami 2FA Policy route.ts single-factor authentication
First Time appeared Umami
Umami umami
Weaknesses CWE-287
CWE-308
CPEs cpe:2.3:a:umami:umami:*:*:*:*:*:*:*:*
Vendors & Products Umami
Umami umami
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-11-03T22:39:05.145Z

Reserved: 2026-11-03T14:33:04.229Z

Link: CVE-2026-121531

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-03T22:19:46.370

Modified: 2026-11-03T22:19:46.540

Link: CVE-2026-121531

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses