CVE-2026-121531
mediumA vulnerability has been found in Umami 3.3.x/3.4.0/3.4.1.
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.
CVSS
6.3
6.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Severity source: NVD CVSS v3.1 (cna@vuldb.com)
Timeline (UTC)
Published: 2026-11-03 22:19
Modified: 2026-11-03 23:17
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-11-03 23:24 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/umami-software/umami/security/advisories/GHSA-29fx-pxjg-35rm cna@vuldb.com
- https://github.com/waterhunter2000-svg/vulnerability-reports cna@vuldb.com
- https://github.com/waterhunter2000-svg/vulnerability-reports/blob/main/03-umami-enforced-2... cna@vuldb.com
- https://vuldb.com/cve/CVE-2026-121531 cna@vuldb.com
- https://vuldb.com/submit/1019994 cna@vuldb.com
- https://vuldb.com/vuln/430290 cna@vuldb.com
- https://vuldb.com/vuln/430290/cti cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 23:24 UTC · record ↗